Through the end of the year at participating St. Regis Hotels & Resorts worldwide, Starwood Preferred Guest members who pay the retail rate for the first night of their stay in select suites can get their second night for only $4 (or local currency equivalent)–1904 was the year the first St. Regis hotel opened. You must make advance reservations using rate plan STR1904. A minimum stay of two nights is required and for every two nights paid, the second night will be priced at $4. To see a full list of the participating hotels and to book, visit http://insideflyerus.wpengine.com/link/?11784 . The St. Regis hotels offering this special deal are located the U.S., China, Indonesia, Italy, Mauritius, Mexico, Qatar, Spain, Thailand and U.A.E.

Bottom line: A limited number of rooms may be available per hotel at these rates and blackout dates and other restrictions may apply. The deal cannot be combined with other offers or promotions.