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                                                                 EXHIBIT 10.1.13


               THIRTEENTH AMENDMENT TO FIRST AMENDED AND RESTATED
                        AGREEMENT OF LIMITED PARTNERSHIP

         This Thirteenth Amendment ("Amendment") to the First Amended and
Restated Agreement of Limited Partnership, is entered into by and among Sunstone
Hotel Investors, Inc., a Maryland corporation, in its individual capacity (the
"Company") and in its capacity as the General Partner of the Partnership (the
"General Partner") and O.T. Hill, LLC, a Delaware limited liability company, as
a newly admitted limited partner of the Partnership (the "Additional Limited
Partner") as of May 28, 1997. All defined terms not otherwise defined herein
shall have the meaning set forth in the Agreement (as defined below).

                                    RECITALS

         A. WHEREAS, the General Partner and certain Limited Partners executed
that certain First Amended and Restated Agreement of Limited Partnership dated
as of October 16, 1995, amending and restating that certain Limited Partnership
Agreement dated as of September 22, 1994 (as amended, the "Agreement"), and the
General Partner caused Sunstone Hotel Investors, L.P. (the "Partnership") to
file a Certificate of Limited Partnership with the Delaware Secretary of State
on September 23, 1994, thereby causing the Partnership to be formed for the
purposes set forth in the Agreement.

         B. WHEREAS, the Partnership has entered into a Capital Contribution
Agreement dated as of May 28, 1997 (the "Contribution Agreement") with the
Additional Limited Partner pursuant to which the Additional Limited Partner has
agreed to accept the Partnership Units in exchange for the contribution of the
Hotel described on Schedule 1 attached hereto (the "Additional Hotel"), subject
to certain indebtedness on the Additional Hotel.

         C. WHEREAS, in order to evidence the issuance of the Partnership Units
and the admission of the Additional Limited Partner into the Partnership, the
parties hereto desire to enter into this Agreement.

         NOW, THEREFORE, the parties hereto agree as follows:

            1. Issuance of Additional Partnership Units. Pursuant to Section
4.2(a) of the Agreement, the General Partner hereby issues a Partnership
Interest in the form of the number of Partnership Units listed on the Unitholder
Ledger to the Additional Limited Partner in consideration for the contribution
of the Additional Hotel pursuant to the terms of the Contribution Agreement.
Such issuance shall be deemed effective, and the Additional Limited Partner
shall be deemed admitted as a Limited Partner, automatically upon the closing of
the Contribution Agreement and all references to "Limited Partner" in the
Agreement shall include the Additional Limited Partner. Except as provided
herein to the contrary, the Partnership Interest issued in the foregoing
sentence shall have all of the same rights, powers and duties and


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shall be equal in all respects to the existing Partnership Interests issued to
the existing Limited Partners specifically including, without limitation, the
Redemption Rights granted pursuant to Section 8.5 of the Agreement, and the
Registration Rights granted pursuant to Section 8.6 of the Agreement.

            2. Allocations of Profit and Loss and Distributions.

               a. Pre-Closing Hotel Profits and Losses. All profits, losses and
other items earned or incurred with respect to the Additional Hotel on or prior
to the Closing Date (as defined in the Contribution Agreement) shall be
allocated to the Additional Limited Partner. All Profits, Losses and other
taxable items earned or incurred after the Closing Date shall be for the account
of the Partnership. The General Partner shall determine the amount of such items
incurred or earned on or prior to the, as opposed to after the, Closing Date in
any reasonable manner permitted under the Internal Revenue Code of 1986, as
amended (the "Code") and the Regulations.

               b. No Right to Distribution for Pre-Closing Hotel Profits. Except
as provided to the contrary in the Contribution Agreement, the Additional
Limited Partner shall not be entitled to any special distributions (or to retain
any amounts) with respect to any income generated by the Additional Hotel that
may be allocated to it for the period on or prior to the Closing Date.

               c. Proration of Distribution for Second Quarter 1997.
Notwithstanding any provision in the Agreement to the contrary, the Additional
Limited Partner shall only be entitled to a pro rata distribution of the
distribution for the quarter ending June 30, 1997 equal to normal dividend paid
to all other Partners multiplied by a fraction, the numerator of which is the
number of days after the Closing Date through June 30th and the denominator of
which is 90.

               d. Capital Accounts; Second Quarter 1997 Allocations. Upon the
admission of the Additional Limited Partner, the Partners' respective Capital
Accounts shall be adjusted to reflect the fair market value of the Partnership's
assets as prescribed in Section 4.4 of the Agreement. For purposes of
determining the Partners' respective Capital Accounts and making allocations in
the quarter ending June 30, 1997:

                  (1) The distribution for the second quarter of 1997 shall be
deemed to have been made prior to the aforementioned Capital Account adjustment
and prior to the capital contribution date.

                  (2) Notwithstanding anything in this Agreement to the
contrary, the Profits, Losses and any items thereof for the quarter ending June
30, 1997, shall be allocated among the Partners so that the per-Unit Capital
Account of the Additional Limited Partner is equal to the per-Unit Capital
Accounts of the existing Limited Partners as of the end of such quarter, after
taking into account the distribution for said quarter.


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            3. Restrictions on Transfer. Notwithstanding any other provision in
the Agreement to the contrary, the Additional Limited Partner shall not convey,
assign, distribute, or otherwise voluntarily or involuntarily transfer (other
than a Pledge permitted under the Agreement) to any person, including any other
partner, any of the Partnership Units (or any other substitute securities or
other securities received on account of such Partnership Units) held by the
Additional Limited Partner at any time prior to November 28, 1997.

            4. Lock-Up Agreements. In addition to the restrictions in Section 3
above, the Additional Limited Partner shall execute a lock-up agreement at the
request of the managing underwriter in connection with any public underwritten
securities offering by the General Partner on the same terms and conditions as
any such agreement executed by Mr. Robert A. Alter, but in no event shall such
lock-up period exceed 120 days after the first date that any shares are released
for sale to the public. As a condition to any transfer of Partnership Units or
Redemption Shares otherwise permitted under the Agreement and Section 3 above,
the Additional Limited Partner shall cause any shareholder or other affiliate
who receives any Partnership Units from the Additional Limited Partner to agree
to be subject to the obligation to execute such a lock-up agreement.

            5. Agreement to be Bound. The Additional Limited Partner hereby
agrees to be bound by each of the terms and conditions of the Agreement, which
are hereby incorporated by reference.

            6. Power of Attorney. The Additional Limited Partner hereby
irrevocably constitutes and appoints the General Partner, any Liquidator, and
authorized officers and attorneys-in-fact of each, and each of those acting
singly, in each case with full power of substitution, as its true and lawful
agent and attorney-in-fact, with full power and authority in its name and place
instead to perform any of the acts set forth in Section 8.2 of the Agreement.

            7. General Provisions. Article 12 of the Agreement is hereby
incorporated by reference as if set forth in full.

            8. Effect of Amendment. Except as amended hereby, the Agreement is
hereby confirmed in all respects.


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            IN WITNESS WHEREOF, the parties hereto have executed this Amendment
as of the date first written above.


GENERAL PARTNER                                      ADDITIONAL LIMITED PARTNER

SUNSTONE HOTEL INVESTORS, INC.,                      O.T. HILL, LLC
a Maryland corporation and the sole
General Partner


By: /s/ ROBERT A. ALTER                              By: /s/ DON PEEPL
    -------------------------                            -----------------------
        Robert A. Alter                                      Don Peepl
        Its: President                                       Its: Member



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