Please tell me about exotic or otherwise interesting resorts or hotels you've had the pleasure of staying in?

I travel most days of my life but seldom stay outside of the normal Hilton/Hyatt/Holiday Inn’s of the world. As I was meandering the web ocean this morning I came across this interesting little resort and wondered who amongst my jellied friends had ever experienced such a thing or something similar. I find it intriguing and may grab my gal pal and head for Costa Rica.