I actually had visited this spa close to 20 years ago when I lived in Phoenix and I'd have to say overall this place has held up fairly well.
The pool outside is definitely the highlight. Very well maintained and is an oasis of tranquility. Relaxing on a chaise after lunch and overlooking the mountains was quite a treat.
The gym could use an update. Grey and dark color scheme in here and the place could use some better energy.
The locker rooms and steam areas also could use an update too. The place is starting to feel a little dated and I was surprised that simple things like trash pickup of items took all day or weren't even taken care of at all.
I might consider another spa option when I'm in Phoenix next time, but this place overall is good.