Hilton Houston Post Oak by the Galleria Home / Hilton Houston Post Oak by the Galleria Share: HOTEL/MOTELBUSINESS BUILDER MEMBER Hilton Houston Post Oak by the Galleria Visit Website 2001 Post Oak Blvd. Houston, TX 77056 (713) 961-9300 (713) 961-1557 (fax) Visit Our Website Hours: Check in: 3:00pm Check out: 12:00pm About Map About Upscale hotel with 448 elegant guestrooms & suites, with balconies and magnificent views, plus 30,000 sq. ft. of space, ideal for corporate or social events. What's Nearby? Distance: 5 10 15 20 25 50 mi.