AMAZING!! The best spa & overall facility that I've ever been to. Any treatment (including just a haircut) opens up the entire facility to you for the day. This includes a full gym, exercise/yoga/etc. classes, sauna, aromatherapy room, steam room, waterfall massage, rooftop pool & lounge area, and on and on and on. The staff is wonderful and accomodating to a fault. The locker room is clean and fully stocked with everything you can think of needing.
The complimentary hot & cold beverage bar w/ healthy snacks is the icing on the relaxation cake.
If you go, plan on spending the entire day there. You won't regret it.