Heaven. Modelled after Scandinavian or Asian style 'bathhouses' where no one wears clothing (here it is optional). Most of the 5 star reviews below mirror my own thoughts so I will not bother repeating, but what I will say is if you are not comfortable with others being nude, don't come here. It really is that simple.
I LOVE the fact that they do not try to push products on you. That is a really annoying thing about most spas and a major plus with this one. The Moroccan spice body treatment was wonderful and my skin felt like silk.