For people who know about different hotels in central new jersey?

There's this hotel or SOMETHING that I'm trying to find or remember the name of. I remember a long time ago I went to this place to check out the rooms and there was this huge bath tub shaped as a margarita cl that was right next to an area for a bed that was upstairs in the room. In the room you were able to walk downstairs into a cave like area that had a pool for yourself!! it was awesome! If anyone could help me i would appreciate it mucho thanksss:)