I picked up a Groupon and thought I'd give the spa a try. I had a body wrap and the service was perfectly acceptable. The service room was small even though it had a shower right in it. Unfortunately, with the sink being right by my head, it kind of ruined the relaxation of the wrap with the sound of the utensils being washed out.
The spa isn't laid out in a circular pattern, it's more of rooms along a corridor. So you have four showers, the toilets, and the sinks/makeup area in one room, the "relaxation room" with couches and drinks in another, the lockers in another, the spa in one, and then all the way down the hall are the steam and sauna rooms. Really, it's fine for relaxing before or after a service or workout but I certainly wouldn't pay just to enter it. There just are not enough amenities for that.