The Japanese hot stone beds are the main reason to come to this spa. They were absolutely divine. The only problems: 1) for such a large spa with tons of lockers, there are only 5 beds (my friend and I were fortunate we neither had to wait for one nor had to worry about vacating them for others, since we just went before Christmas in Vegas' off-season) and 2) because the beds are in a co-ed area, you are REQUIRED to wear a robe or bathing suit (bummer for those of us who prefer to enjoy spas in the buff).
The salt room left much to be desired: while it had immersive sound, vibrating lounge chairs, and a cool mineral wall appearance; it was too distracting to be very relaxing.
The main jacuzzi/pool room again only had six chairs/lounges in it, and lighting was much too bright.
The Eucalyptus steam room was great. A nice, large room. Very effective and refreshing.
The sauna room was also quite large but not very hot. I barely worked up a sweat!
Nice amenities (shower, sinks, vanity mirrors).
Overall, I enjoyed myself but I would never go if I thought there would be more than a handful of people. There are better spas out there with comparable $45 facility fees (Qua comes to mind).