The Waldorf Astoria Las Vegas is a 5 Star Hotel. Formerly known as Mandarin Oriental, the first 22 floors are hotel rooms only. The view lobby separates the hotel from the residences on the 23rd floor. Floors 24 and higher offer luxurious residences with all the 5 star amenities.Waldorf Astoria owners have access to the hotel’s amenities, including one of the best spas in town. Just across the driveway, Aria Casino and Crystals offer outstanding restaurants and shopping.