You may be held responsible for unpaid rent or damages caused by the person to whom you have sublet. The landlord has the right to inspect the premises and the furniture furnished by him upon responsible notice. A landlord will be trespassing if he enters the premises with a pass key without notice. Exceptions include a genuine emergency or when showing the apartment to a prospective renter or buyer. The landlord is permitted by terms of the lease to show the apartment at any time to a prospective renter within three months of the lease expiration date or at any time to a prospective buyer.
Some leases give the landlord the right to inspect the premises at any time.
You may be evicted for objectionable conduct. A landlord, therefore, can hold any one of the co-signers responsible. To avoid potential problems, you and your roommate should have a clear understanding in advance of how financial obligations will be met. You are also responsible for getting roommates to pay for their portion of a utility bill if it is under your name. The more cooperative you are, the more cooperation you are likely to receive.