A Waldorf Astoria resort, the 311-room Casa Marina is a 1920s hotel with one of the largest private beaches in Key West and probably one of the few resorts in the world that holds sand castle workshops in sand castle building. The guest rooms and suites combine tradition with contemporary style and have configurations that easily accommodate families or vacationing friends. A half mile from Duval street nightlife, It has three restaurants, two pools and a selection of non-motorized water sports.