<PAGE>   1
                                                                   Exhibit 10.66


                                 LOAN AGREEMENT


                                     between


                    STARWOOD HOTELS & RESORTS WORLDWIDE, INC.

                                       and


                            STARWOOD HOTELS & RESORTS
                      ------------------------------------

                          Dated as of February 23, 1998
                      ------------------------------------

                                  $100,000,000
<PAGE>   2
                  LOAN AGREEMENT, dated as of February 23, 1998, between
STARWOOD HOTELS & RESORTS WORLDWIDE, INC., a Maryland corporation (the
"Borrower"), and STARWOOD HOTELS & RESORTS, a Maryland real estate investment
trust (the "Lender").


                             W I T N E S S E T H :

                  WHEREAS, the Borrower and the Lender are among the parties to
that certain Agreement and Plan of Merger, dated as of October 19, 1997 (as
amended, supplemented or otherwise modified from time to time in accordance with
the terms thereof, the "Merger Agreement");

                  WHEREAS, in connection with the transactions contemplated by
the Merger Agreement and the Stock Purchase Agreement, the Lender has agreed to
advance the loan to the Borrower and, along with SLT Realty Limited Partnership,
a Delaware limited partnership (SLT"), to guaranty the repayment of any
indebtedness of the Borrower to third parties on the terms provided for herein.

                  NOW, THEREFORE, the parties hereto have agreed as follows:


                                    ARTICLE I

                                   DEFINITIONS

                  As used herein, the following terms shall have the meanings
herein specified unless the context otherwise requires. Defined terms in this
Agreement shall include in the singular number the plural and in the plural the
singular:

                  "Affiliate" means, to any Person, any Person which, directly
or indirectly, controls, is controlled by or is under common control with such
Person and includes each executive officer, director, trustee, limited liability
company manager or general partner of such Person, and each Person who is the
beneficial owner of 10% or more of any class of voting stock of such Person. For
the purposes of this definition, "control" means the possession of the power to
direct or cause the direction of management and policies of such Person, whether
through the ownership of voting securities, by contract or otherwise.

                  "Business Day" means a day of the year on which banks are not
required or authorized to close in New York City.

                  "Closing Date" means the date on which all conditions
precedent to the Loan set forth in Article IV shall have been satisfied and the
Loan is made.
<PAGE>   3
                  "Default" means any event which with the passing of time or
the giving of notice or both would become an Event of Default.

                  "Default Rate" has the meaning specified in Section 2.5(b).

                  "Event of Default" has the meaning specified in Article VII.

                  "Final Maturity Date" means February 23, 2005.

                  "Governmental Authority" means any federal, state, county or
municipal government, or political subdivision thereof, any governmental or
quasi-governmental agency, authority, board, bureau, commission, department,
instrumentality, or public body, or any court, administrative tribunal or public
utility.

                  "Indebtedness" of any Person means such Person's (a)
obligations for borrowed money, (b) obligations representing the deferred
purchase price of property or services (other than accounts payable arising in
the ordinary course of such Person's business payable on terms customary in the
trade), (c) obligations secured by liens or payable out of the proceeds or
production from property or assets now or hereafter owned or acquired by such
Person and (d) obligations which are evidenced by notes, acceptances or other
instruments.

                  "Interest Rate" means the rate of 8.5% per annum.

                  "Laws" means collectively, all federal, state and local laws,
statutes, codes, ordinances, orders, rules and regulations, including judicial
opinions or precedential authority in the applicable jurisdiction, and all
directions, requirements, orders and notices of violation of any governmental or
quasi-governmental agency, body or office having or asserting jurisdiction over
Borrower, the properties identified on Exhibit A attached hereto or both, as the
same may be amended, modified or supplemented from time to time.

                  "Loan" has the meaning specified in Section 2.1(b).

                  "Loan Documents" shall mean this Loan Agreement, the Note, the
Mortgage, the Subordination Agreement and any other documents, agreements or
instruments now or hereafter executed which evidence, secure or otherwise relate
to the Loan.

                  "Merger Agreement" has the meaning specified in the Recitals
to this Agreement.


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                  "Mortgage" means the Deed of Trust, Security Agreement and
Financing Statement made by the Owner in favor of the Lender dated as of the
date hereof.

                  "Note" has the meaning specified in Section 2.1(a).


                  "Obligations" means the Loan and all other advances, debts,
liabilities, obligations, covenants and duties owing by the Borrower to the
Lender, any Affiliate of the Lender or any Indemnitee, of every type and
description, present or future, arising under this Agreement or the Note,
whether direct or indirect (including, without limitation, those acquired by
assignment), absolute or contingent, due or to become due, now existing or
hereafter arising and however acquired. The term "Obligations" includes, without
limitation, all interest, charges, expenses, fees, attorneys' fees and
disbursements and any other sum then payable by the Borrower under this
Agreement or the Note.

                  "Owner" means Harbor-Cal S.D.

                  "Person" means an individual, partnership, corporation
(including, without limitation, a business trust), limited liability company,
joint stock company, trust, unincorporated association, joint venture or other
entity, or a governmental authority.

                  "Principal Balance" means the outstanding principal balance of
the Note from time to time.

                  "Stock Purchase Agreement" means that certain Stock Purchase
Agreement dated as of the date hereof between the Borrower and the Lender.

                  "Subordination Agreement" means that certain Subordination and
Intercreditor Agreement dated as of the date hereof to which the Borrower and
the Lender are parties.

                  "Taxes" means any and all present or future taxes, levies,
imposts, deductions, charges or withholdings or any liabilities with respect
thereto including those arising after the date hereof as a result of the
adoption of or any change in any law, treaty, rule, regulation, guideline or
determination of a Governmental Authority or by any change in the interpretation
or application thereof by a Governmental Authority, but excluding such taxes as
are imposed on or measured by the Lender's income.

                                   ARTICLE II

                           AMOUNT AND TERM OF THE LOAN

                  2.1. The Note; The Loan. (a) The Borrower's obligation to pay
the principal of, and interest on, the Loan shall be evidenced by a promissory
note, in the form attached hereto as Exhibit A, dated the date hereof and made
by the Borrower



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<PAGE>   5
payable to the order of the Lender in a stated principal amount equal to the
amount of the Loan (as the same may be amended, modified, supplemented, extended
or consolidated, the "Note").

                  (b) On the terms and subject to the conditions contained in
this Agreement, the Lender agrees to make to the Borrower a loan in the
principal amount of $100,000,000 (the "Loan") on the Closing Date.

                  2.2. No Additional Advance. The Borrower shall have no right
to any further advances or readvances under this Agreement after the funding of
the Loan on the Closing Date.

                  2.3. Repayment. The Borrower shall repay the entire Principal
Balance on the Final Maturity Date.

                  2.4. Prepayments. (a) The Borrower shall have no right to
prepay the Principal Balance other than as provided in this Section 2.4.

                  (b) The Borrower may, upon at least two (2) Business Days'
prior notice (which may be by telephone, provided that confirmation in writing
is received within one (1) Business Day after such telephonic notice) to the
Lender, stating the proposed date and aggregate principal amount of the
prepayment, prepay the Principal Balance in whole or ratably in part, without
premium or penalty, together with accrued interest to the date of such
prepayment on the principal amount prepaid. Upon the giving of such notice of
prepayment, the principal amount of the Loan specified to be prepaid shall
become due and payable on the date specified for such prepayment.

                  2.5. Interest. (a) The Borrower shall pay interest on the
Principal Balance from the date hereof until the Principal Balance and all
Obligations shall be paid in full, at the Interest Rate.

                  (b) Unless prohibited by the terms of the Subordination
Agreement, any overdue amount payable hereunder shall bear interest from the
date due, until the date paid in full, at a rate per annum (calculated for the
actual number of days elapsed on the basis of a 365-day year) equal to, on a
daily basis, 1% plus the Interest Rate (the "Default Rate"), provided, however,
that such interest rate shall in no event exceed the maximum interest rate which
the Borrower may by law pay.

                  2.6. Increased Costs. If due to (a) the introduction of or any
change in or in the interpretation of any law or regulation, (b) compliance by
the Lender with any law or regulation or with any guideline or request from any
central bank or other Governmental Authority (whether or not having the force of
law) or (c) payment by the Lender of Taxes, there shall be any increase in the
cost to the Lender of funding or maintaining the Loan, then the Borrower shall
from time to time, upon demand by the Lender, pay to the Lender



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<PAGE>   6
additional amounts sufficient to compensate the Lender for such increased cost.
A certificate as to the amount of such increased cost, submitted to the Borrower
by the Lender, shall be conclusive and binding for all purposes, absent manifest
error.

                  2.7. Payments and Computations. (a) The Borrower shall pay to
Lender at its address referred to opposite its signature to this Agreement not
later than 11:00 A.M. (New York City time) on the first (1st) day of each
calendar month after the date hereof, in immediately available funds without
set-off or counterclaim, all interest accrued under the Note during the
immediately prior calendar month; provided, however, in the event the Borrower
gives telephonic notice to the Lender by 11:00 AM (New York City time) on the
day when due that a payment has been made by wire transfer of immediately
available funds, such payment may be received by the Lender not later than 2:00
PM (New York City time) on the same day. Payment received by the Lender after
11:00 A.M. (New York City time) or after 2:00 P.M. (New York City time), if the
Borrower has given the Lender the notice required above, shall be deemed to be
received on the next Business Day.

                  (b) All computations of interest and fees shall be made by the
Lender on the basis of the actual number of days elapsed in a 365-day year.

                  (c) Whenever any payment hereunder or under the Note shall be
stated to be due on a day other than a Business Day, such payment shall be made
on the next succeeding Business Day, and such extension of time shall in such
case be included in the computation of payment of interest or fees, as the case
may be.


                                   ARTICLE III

                                   GUARANTIES

                  3.1. Guaranties. Subject to the terms and conditions set forth
in this Agreement and in the Subordination Agreement, the Lender hereby agrees
to issue and to cause SLT and certain Affiliates of the Lender and SLT to issue
for the account of the Borrower and certain of the Borrower's Affiliates one or
more guaranties of indebtedness of the Borrower and certain of the Borrower's
Affiliates other than this Loan, subject to the following provisions:

                  (a) Conditions. The obligation of the Lender and SLT to issue
a guaranty is subject to the satisfaction in full of the following conditions:

                  (i) the proposed guaranty must be permitted under the terms of
         the Credit Agreement (as defined in the Subordination Agreement) and
         comply with the terms and conditions of the Subordination Agreement;



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<PAGE>   7
                  (ii) the Borrower shall have executed and/or delivered to the
         Lender and SLT such documents and materials as may be reasonably
         required by the Lender and SLT in connection with the guaranty; and

                  (iii) the terms of the proposed guaranty shall be satisfactory
         to the Lender and SLT in their sole discretion and in no event shall be
         inconsistent with or put at risk the Lender's status as a real estate
         investment trust.

                  (b) Issuance of Guaranty. (i) The Borrower shall give the
Lender and SLT written notice that it needs the Lender and SLT to issue a
guaranty not later than the twentieth (20th) Business Day preceding the
requested date for issuance thereof under this Agreement, or such shorter notice
as may be acceptable to the Lender and SLT. Such notice shall specify (A) the
amount that the guaranty requested is to cover, (B) the effective date (which
shall be a Business Day) of such guaranty, (C) the date or conditions upon which
such guaranty is to terminate (which shall be no later than the Business Day
immediately preceding the scheduled Final Maturity Date), (D) the Person(s) for
whose benefit such guaranty is to be issued, and (E) other relevant terms of
such guaranty.

                  (c)      Reimbursement Obligations:

                  (A) subject to the terms of the Credit Agreement and the
         Subordination Agreement and to the same limits on subrogation and
         subordination as provided in the relevant guaranty, the Borrower shall
         reimburse the Lender and SLT, as applicable, for any and all amounts
         paid and expenses incurred under or in connection with any guaranty
         (the "Reimbursement Obligations") no later than the date (the
         "Reimbursement Date") which is three (3) Business Days after the
         Borrower receives written notice from the Lender and SLT that payment
         has been made under a guaranty by the Lender and SLT; and

                  (B) all Reimbursement Obligations with respect to any guaranty
         shall bear interest at the Interest Rate from the date of the relevant
         payment under such guaranty until the Reimbursement Date. If any
         Reimbursement Obligations are not paid by the Reimbursement Date, the
         outstanding amounts shall bear interest at the Default Rate from the
         Reimbursement Date until the date paid.

                  (C) No action taken or omitted in good faith by the Lender or
SLT under or in connection with any guaranty shall put such party under any
resulting liability to the Borrower.

                  (d) Payment of Reimbursement Obligations. Subject to the terms
of the Credit Agreement and the Subordination Agreement, the Borrower
unconditionally agrees to pay to each of the Lender and SLT the amount of all
Reimbursement Obligations, interest and other amounts payable to the Lender and
SLT under or in connection with the guaranties when such amounts are due and
payable, irrespective of any claim, setoff, defense or other right



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<PAGE>   8
which the Borrower may have at any time against the Lender, SLT or any other
Person.

                  (e) Charges. Commencing April 1, 1998, the Borrower shall pay
to the SLT on the first day of each calendar quarter, an amount equal to
one-quarter (1/4) of one percent (0.25%) per annum, payable quarterly on the
average amount guaranteed by the Lender and SLT for the immediately prior
calendar quarter, as consideration for the issuance, administration, amendment
and payment or cancellation of any guaranties. SLT shall pay the Lender an
equitable portion of such amount.

                  (f) Indemnification; Exoneration. (i) In addition to all other
amounts payable to the Lender and SLT, the Borrower hereby agrees to defend,
indemnify, and save each of the Lender and SLT harmless from and against any and
all claims, demands, liabilities, penalties, damages, losses (other than loss of
profits), costs, charges and expenses (including reasonable attorneys' fees)
which the Lender or SLT may incur or be subject to as a consequence, direct or
indirect, of (A) the issuance of any guaranty other than as a result of the
gross negligence or willful misconduct of the Lender or SLT, as determined by a
court of competent jurisdiction, or (B) the failure of the Lender or SLT to
honor a payment request under any guaranty as a result of any act or omission,
whether rightful or wrongful, of any present or future de jure or de facto
government or Governmental Authority.

                  (g) Acts or Omissions. The Borrower assumes (and not the
Lender or SLT) all risks of the acts and omissions of, or misuse of guaranties
by, the respective beneficiaries of the guaranties. In furtherance and not in
limitation of the foregoing, the Lender and SLT shall not be responsible for:
(A) the form, validity, legality, sufficiency, accuracy, genuineness or legal
effect of any document submitted by any party in connection with the issuance of
or payment under the guaranties, even if it should in fact prove to be in any or
all respects invalid, insufficient, inaccurate, fraudulent or forged; (B) the
validity, legality or sufficiency of any instrument transferring or assigning or
purporting to transfer or assign a guaranty or the rights or benefits thereunder
or proceeds thereof, in whole or in part, which may prove to be invalid or
ineffective for any reason; (C) failure of the beneficiary of a guaranty to duly
comply with conditions required in order to receive a payment under such
guaranty; (D) errors, omissions, interruptions or delays in transmission or
delivery of any messages, by mail, cable, telegraph, telex or otherwise, whether
or not they be in cipher; (E) errors in interpretation of technical terms; (F)
any loss or delay in the transmission or otherwise of any document required in
order to make a request for payment under any guaranty or of the proceeds
thereof; (G) the misapplication by the beneficiary of a guaranty of the proceeds
of any payment under such guaranty; and (H) any consequences arising from causes
beyond the control of the Lender or SLT.

                  3.2 Obligations Several. The obligations of each of the Lender
and SLT under this Article III are several and not joint, and neither party
shall be responsible for the obligation to issue guaranties of the other party.



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                  3.3 Assignment by Lender. The obligations of the Lender to
issue guaranties pursuant to this Article III shall continue to be binding on
Starwood Hotels & Resorts, as the initial Lender hereunder, after any assignment
of the Loan to SLT.

                                   ARTICLE IV

                              CONDITIONS PRECEDENT


                  The obligation of the Lender to make the Loan on the Closing
Date shall be subject to the satisfaction of all of the following conditions
precedent any of which may be waived by Lender at any time either orally or in
writing:

                  (a) Documents. The Lender shall have received this Agreement,
the Note and the Mortgage duly executed by the Borrower or the Owner, as
applicable, and in form and substance satisfactory to the Lender, together with
such other documents, certificates and opinions as shall be reasonably requested
by the Lender.

                  (b) Merger. The conditions set forth in Article VI of the
Merger Agreement shall have been satisfied or waived, and the Merger (as defined
in the Merger Agreement) shall have taken place.

                  (c) No Default. No Default or Event of Default shall have
occurred and be continuing or would result from the making of the Loan on the
Closing Date.

                  (d) Representations and Warranties. The representations and
warranties described in Article V shall be true and correct on and as of the
Closing Date.


                                    ARTICLE V

                         REPRESENTATIONS AND WARRANTIES

                  In order to induce the Lender to enter into this Agreement and
to make the Loan provided for herein, the Borrower hereby represents and
warrants as follows:

                  (a) Borrower is a corporation duly formed, validly existing
and in good standing under the laws of the State of Maryland. Borrower is
qualified and authorized to do business in the State of Maryland.

                  (b) Borrower has full power and authority to perform the
obligations and carry out the duties imposed upon Borrower by this Agreement and
the Note, and Borrower has taken all action necessary to carry out Borrower's
obligations and duties in connection with the Loan.


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<PAGE>   10
                  (c) No aspect of the Loan transaction violates or will violate
any usury laws or laws of the State of Maryland, regarding the validity of
agreements to pay interest in effect on the date hereof.

                  (d) Borrower is not a "foreign person" within the meaning of
Section 1445 or 7701 of the Internal Revenue Code.

                  (e) Borrower has delivered to Lender a true, correct and
complete copy of Borrower's organizational documents and the same are in full
force and effect. To the best of Borrower's knowledge, there are no defaults by
any party under Borrower's organizational documents, nor do circumstances exist
which, with the passage of time, the giving of notice, or both, would constitute
a default thereunder.


                                   ARTICLE VI

                                    COVENANTS

                  The Borrower hereby covenants and agrees that for so long as
this Agreement is in effect and the Note is outstanding and until the Loan,
together with interest and all other Obligations incurred hereunder, are paid in
full, unless otherwise permitted by Lender:

                  6.1 Use of Proceeds. The proceeds of the Loan shall be used to
purchase shares of ITT Corporation, a Nevada corporation, from the Lender
pursuant to the Stock Purchase Agreement and shares of beneficial interest of
Lender.

                  6.2 Compliance with Merger Agreement. The Borrower shall
comply in all respects with the Merger Agreement and shall not take any action
to terminate the Merger Agreement (other than in accordance with Article VII
thereof) without the prior written consent of the Lender.

                  6.3 Negative Covenants. Borrower shall not, on or after the
date hereof, without the prior written consent of Lender:

                  (a) Materially alter the character of its business from that
conducted on the date hereof;

                  (b) Wind up, liquidate or dissolve its affairs;

                  (c) Take any action or omit to take any action that would
cause it not to be in good standing in the State of Maryland;


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<PAGE>   11
                  (d) Amend, modify or change in any manner materially adverse
to the interests of the Lender the certificate of incorporation (including,
without limitation, by the filing of any certificate of designation) or by-laws
of the Borrower;


                                   ARTICLE VII

                                EVENTS OF DEFAULT


                  Upon the occurrence and continuation of any of the following
specified events (each, an "Event of Default"):

                  7.1 Payments. The Borrower shall (i) default in the payment
when due of any Principal Balance or (ii) default, and such default shall
continue for ten (10) or more Business Days after written notice from Lender, in
the payment when due of any interest on the Loan or any fees or any other
Obligations owing hereunder or under the Note; or

                  7.2 Covenants. The Borrower shall default in the due
performance or observance by it of any term, covenant or agreement (other than
those referred to in Section 7.1) contained in this Agreement or one of the
Owners shall default in the due performance or observance by it of any term,
covenant or agreement contained in the Mortgages and such default shall continue
beyond the period of time specified by Lender in its written notice of default,
which period shall be no less than twenty (20) Business Days; or

                  7.3 Default Under Other Agreements. The Borrower shall (i)
default in any payment with respect to any Indebtedness (other than the
Obligations) beyond the period of grace, if any, applicable thereto or (ii)
default in the observance or performance of any agreement or condition relating
to any such Indebtedness or contained in any instrument or agreement evidencing,
securing or relating thereto, or any other event shall occur or condition exist,
the effect of which default or other event or condition is to cause, or to
permit the holder or holders of such Indebtedness (or a trustee or agent on
behalf of such holder or holders) to cause any such Indebtedness to become due
prior to its stated maturity; or (b) any such Indebtedness shall be declared to
be due and payable (other than to the extent the Borrower promptly denies in
writing to the applicable creditor the validity of such declaration and is
contesting same in good faith), or required to be prepaid other than by a
regularly scheduled required prepayment, prior to the stated maturity thereof,
and such default shall continue beyond


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<PAGE>   12
the period of time specified by Lender in its written notice of default, which
period shall be no less than twenty (20) Business Days. Borrower shall have the
right to cure any default under this Section 7.3 by repaying or refinancing the
Indebtedness with respect to which a default has occurred.

                  7.4 Bankruptcy, etc. The Borrower shall commence a voluntary
case concerning itself under Title 11 of the United States Code entitled
"Bankruptcy", as now or here after in effect, or any successor thereto (the
"Bankruptcy Code"); or an involuntary case is commenced against the Borrower and
the petition is not controverted within 20 days, or is not dismissed within 60
days, after commencement of the case; or a custodian (as defined in the
Bankruptcy Code) is appointed for, or takes charge of, all or substantially all
of the property of the Borrower, or the Borrower commences any other proceeding
under any reorganization, arrangement, adjustment of debt, relief of debtors,
dissolution, insolvency or liquidation or similar law of any jurisdiction
whether now or hereafter in effect relating to the Borrower, or there is
commenced against the Borrower any such proceeding which is not controverted
within 20 days or remains undismissed for a period of 60 days; or the Borrower
is adjudicated insolvent or bankrupt; or any order of relief or other order
approving any such case or proceeding is entered; or the Borrower suffers any
appointment of any custodian or the like for it or any substantial part of its
property to continue undischarged or unstayed for a period of 60 days; or the
Borrower makes a general assignment for the benefit of creditors; or any cor-
porate action is taken by the Borrower for the purpose of effecting any of the
foregoing;


                  then, and in any such event, and at any time thereafter, if
any Event of Default shall then be continuing, the Lender may, at its sole
discretion, but subject to (and only to the extent permitted by) the
Subordination Agreement, by written notice to the Borrower, take any or all of
the following actions, without prejudice to the rights of the Lender to enforce
its claims against the Borrower, except as otherwise specifically provided for
in this Agreement: (i) declare the Lender's obligation to advance the Loan or
any portion thereof terminated; and (ii) declare the principal of and any
accrued interest in respect of the Loan and all Obligations to be, whereupon the
same shall become, forthwith due and payable without presentment, demand,
protest or other notice of any kind, all of which are hereby waived by the
Borrower.


                                  ARTICLE VIII

                                  MISCELLANEOUS

                  8.1. Payment of Expenses, etc. The Borrower agrees to: (i) pay
all reasonable out-of-pocket costs and expenses of the Lender in connection with
the


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<PAGE>   13
administration and enforcement of this Agreement and the Note and any
amendment, waiver or consent relating thereto (including, without limitation,
the reasonable fees and disbursements of counsel for the Lender), provided that
each of the parties hereto shall pay its own costs and expenses relating to the
negotiation, preparation and delivery of this Agreement and the Note; and (ii)
indemnify the Lender, its Affiliates and their respective officers, directors,
employees, representatives and agents from and hold each of them harmless
against any and all losses, liabilities, claims, damages or expenses incurred
by any of them as a result of, or arising out of, or in any way related to, or
by reason of, an investigation, litigation or other proceeding (whether or not
the Lender is a party thereto) related to the entering into and/or performance
of this Agreement or the Note or the use of the proceeds of the Loan hereunder.

                  8.2. Notices. Except as otherwise expressly provided herein,
all notices and other communications provided for hereunder shall be in writing
(including telegraphic, telex, telecopier, facsimile or cable communication) and
mailed, telegraphed, telexed, telecopied, faxed, cabled or delivered at the
address specified opposite its signature below or at such other address as shall
be designated by any party in a written notice to the other party hereto. All
such notices and communications shall be mailed, telegraphed, telexed,
telecopied, or cabled or sent by overnight courier, and shall be effective when
received.

                  8.3. Benefit of Agreement. This Agreement shall be binding
upon and inure to the benefit of and be enforceable by the respective successors
and assigns of the parties hereto, provided that the Borrower may not assign or
transfer any of its rights or obligations hereunder other than in accordance
with the Transaction Agreement.

                  8.4. No Waiver; Remedies Cumulative. No failure or delay on
the part of the Lender in exercising any right, power or privilege hereunder and
no course of dealing between the Borrower and the Lender shall operate as a
waiver thereof; nor shall any single or partial exercise of any right, power or
privilege hereunder preclude any other or further exercise thereof or the
exercise of any other right, power or privilege hereunder. The rights and
remedies herein expressly provided are cumulative and not exclusive of any
rights or remedies which the Lender would otherwise have. No notice to or demand
on the Borrower in any case shall entitle the Borrower to any other or further
notice or demand in similar or other circumstances or constitute a waiver of the
rights of the Lender to any other or further action in any circumstances without
notice or demand.

                  8.5. Governing Law; Submission to Jurisdiction; Venue; Waiver
of Jury Trial. (a) This Agreement and the Note and the rights and obligations of
the parties hereunder and thereunder shall be construed in accordance with and
be governed by the law of the State of New York, in accordance with the
provisions of New York State


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<PAGE>   14
General Obligations Law Section 5-1401. The parties hereto irrevocably submit to
the jurisdiction of the courts of the State of New York and the Federal courts
of the United States of America located in the State of New York solely in
respect of the interpretation and enforcement of the provisions of this
Agreement and the Note, and in respect of the transactions contemplated hereby,
and hereby waive, and agree not to assert, as a defense in any action, suit or
proceeding for the interpretation or enforcement hereof or of any such document,
that it is not subject thereto or that such action, suit or proceeding may not
be brought or is not maintainable in said courts or that the venue thereof may
not be appropriate or that this Agreement or the Note may not be enforced in or
by such courts, and the parties hereto irrevocably agree that all claims with
respect to such action or proceeding shall be heard and determined in such a New
York State or Federal court. The parties hereby consent to and grant any such
court jurisdiction over the person of such parties and over the subject matter
of such dispute and agree that mailing of process or other papers in connection
with any such action or proceeding in the manner provided in Section 8.2 or in
such other manner as may be permitted by law shall be valid and sufficient
service thereof.

                  (b) EACH PARTY ACKNOWLEDGES AND AGREES THAT ANY CONTROVERSY
WHICH MAY ARISE UNDER THIS AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND
DIFFICULT ISSUES, AND THEREFORE EACH SUCH PARTY HEREBY IRREVOCABLY AND
UNCONDITIONALLY WAIVES ANY RIGHT SUCH PARTY MAY HAVE TO A TRIAL BY JURY IN
RESPECT OF ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO
THIS AGREEMENT, OR THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT. EACH PARTY
CERTIFIES AND ACKNOWLEDGES THAT (i) NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY
OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD
NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER, (ii) EACH
PARTY UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF THIS WAIVER, (iii) EACH
PARTY MAKES THIS WAIVER VOLUNTARILY, AND (iv) EACH PARTY HAS BEEN INDUCED TO
ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND
CERTIFICATIONS IN THIS SECTION 7.5.

                  8.6. Counterparts. This Agreement may be executed in any
number of counterparts and by the different parties hereto on separate
counterparts, each of which when so executed and delivered shall be an original,
but all of which shall together constitute one and the same instrument.

                  8.7. Headings Descriptive. The headings of the several
sections and subsections of this Agreement are inserted for convenience only and
shall not in any way affect the meaning or construction of any provision of this
Agreement.



                                      -14-
<PAGE>   15
                  8.8. Amendment or Waiver. Neither this Agreement nor the Note
nor any terms hereof or thereof may be changed, waived, discharged or terminated
unless such change, waiver, discharge or termination is in writing signed by the
Borrower and the Lender.

                  8.9. Survival. All indemnities set forth herein shall survive
the execution and delivery of this Agreement and the making and repayment of the
Loan.

                  8.10 Recourse to Trust. The Borrower acknowledges and agrees
that the name "Starwood Hotels & Resorts" is a designation of the Lender and its
trustees (as trustees but not personally) under a Declaration of Trust dated
August 25, 1969, as amended and restated as of June 6, 1988, as the same has
been or may be amended from time to time thereafter, and that the Borrower shall
look solely to the Lender's assets for the enforcement of any claims against the
Lender, as the trustees, officers, agents and security holders of the Lender
assume no personal liability for obligations entered into on behalf of the
Lender, and their respective individual assets shall not be subject to the
claims of any person relating to such obligations. The foregoing shall govern
all direct and indirect obligations of the Lender under this Agreement and the
Note.

                  8.11 Subordination. The Lender and the Borrower acknowledge
and agree that all rights of the Lender to receive any payments from the
Borrower hereunder or under any guarantees, mortgages, other types of security
documents or otherwise are and shall continue to be subject and subordinate in
payment to the prior payment in full, in cash, of all Senior Indebtedness (as
defined in the Subordination Agreement), to the extent, and in the manner set
forth in the Subordination Agreement. All of the terms, covenants and conditions
hereof are hereby and shall continue to be subordinate to all of the terms,
covenants and conditions of the Senior Indebtedness. The foregoing shall apply,
notwithstanding the availability of other collateral to the Senior Creditors (as
defined in the Subordination Agreement) or the actual date and time of
execution, delivery, recordation, filing or perfection of any of the Senior
Indebtedness, or the lien or priority of payment thereof, and in any instance
wherein the Senior Indebtedness or any claim for the Senior Indebtedness is
subordinated, avoided or disallowed, in whole or in part, under Title 11 of the
United States Code (the "Bankruptcy Code") or other applicable federal or state
law.


                                   -15-
<PAGE>   16
                  IN WITNESS WHEREOF, each of the parties hereto has caused a
counterpart of this Agreement to be duly executed and delivered as of the date
first above written.


                                         BORROWER:

Address:                                 STARWOOD HOTELS & RESORTS
                                         WORLDWIDE, INC., a Maryland corporation
Starwood Hotels & Resorts
  Worldwide, Inc.
2231 East Camelback Road, Ste. 400         By:        /s/ Richard A. Smith
Phoenix, Arizona 85016                         ---------------------------
Attention: Alan M. Schnaid                    Name:  Richard A. Smith
Fax: (602)852-0984                            Title:   Authorized Signatory


Copies to:
Sherwin Samuels, Esq.
Sidley & Austin
555 West Fifth Street
Los Angeles, California 90013
Fax: (213) 896-6600


                                         LENDER:

Address:                                 STARWOOD HOTELS & RESORTS, a Maryland
                                         real estate investment trust
Starwood Hotels & Resorts
2231 East Camelback Road, Ste. 410
Phoenix, Arizona 85016
Attention: Ronald C. Brown                  By:    /s/ Ronald C. Brown
Fax: (602) 852-3379                              ---------------------------
                                                     Name:  Ronald C. Brown
Copies to:                                  Title:   Senior Vice President
Sherwin Samuels, Esq.
Sidley & Austin
555 West Fifth Street
Los Angeles, California 90013
Fax: (213) 896-6600



                                      -16-
<PAGE>   17
                                    EXHIBIT A


                                  FORM OF NOTE



                                      -17-
<PAGE>   18


                                 PROMISSORY NOTE


U.S.  $100,000,000                                      Dated: February 23, 1998



                  FOR VALUE RECEIVED, the undersigned, STARWOOD HOTELS & RESORTS
WORLDWIDE, INC., a Maryland corporation (the "Borrower"), HEREBY PROMISES TO PAY
to the order of STARWOOD HOTELS & RESORTS, a Maryland real estate investment
trust (the "Lender"), the principal sum of ONE HUNDRED MILLION UNITED STATES
DOLLARS ($100,000,000), payable at such times, and in such amounts, as are
specified in the Loan Agreement (defined below). Capitalized terms used but not
otherwise defined herein shall have the meanings set forth in the Loan
Agreement.

                  The Borrower promises to pay, together with all fees and other
amounts due under the Loan Agreement, interest on the unpaid principal amount of
this Promissory Note ("Note") from the date made until such principal amount is
paid in full, at such interest rates, and payable at such times, as are
specified in the Loan Agreement.

                  Both principal and interest are payable in lawful money of the
United States of America to the Lender at 2231 East Camelback Road, Suite 410,
Phoenix, Arizona 85016, in immediately available funds, or to such other address
or bank account as the Lender shall direct.

                  This Note is the Note referred to in, and is entitled to the
benefits of, the Loan Agreement, dated as of the date hereof (said Agreement, as
it may be amended or otherwise modified from time to time, being the "Loan
Agreement"), among the Borrower and the Lender. The Loan Agreement, among other
things, (i) provides for the advance of the Loan in an aggregate amount not to
exceed at any time outstanding the United States dollar amount first above
mentioned, the indebtedness of the Borrower to the Lender resulting from such
Loan being evidenced by this Note, and (ii) contains provisions for acceleration
of the maturity of the unpaid principal amount of this Note upon the happening
of certain stated events and also for prepayments on account of the principal
hereof prior to the maturity hereof upon the terms and conditions therein
specified.

                  Demand, presentment, protest and notice of nonpayment and
protest are hereby waived by the Borrower.
<PAGE>   19
                  The Lender and the Borrower acknowledge and agree that all
rights of the Lender to receive any payments from the Borrower hereunder or
under any guarantees, mortgages, other types of security documents or otherwise
are and shall continue to be subject and subordinate in payment to the prior
payment in full, in cash, of all Senior Indebtedness (as defined in the
Subordination Agreement (as defined in the Loan Agreement)), to the extent, and
in the manner set forth in the Subordination Agreement. All of the terms,
covenants and conditions hereof are hereby and shall continue to be subordinate
to all of the terms, covenants and conditions of the Senior Indebtedness. The
foregoing shall apply, notwithstanding the availability of other collateral to
the Senior Creditors (as defined in the Subordination Agreement) or the actual
date and time of execution, delivery, recordation, filing or perfection of any
of the Senior Indebtedness, or the lien or priority of payment thereof, and in
any instance wherein the Senior Indebtedness or any claim for the Senior
Indebtedness is subordinated, avoided or disallowed, in whole or in part, under
Title 11 of the United States Code (the "Bankruptcy Code") or other applicable
federal or state law.


                   [Remainder of page intentionally left blank]
<PAGE>   20
                  This Note shall be governed by, and construed and interpreted
in accordance with, the law of the State of New York.



                                      STARWOOD HOTELS & RESORTS
                                      WORLDWIDE, INC., a Maryland corporation



                                      By: /s/ Richard A. Smith
                                         --------------------------------
                                         Name: Richard A. Smith
                                         Title:  Authorized Signatory