This spa has the best amenities of any place I have ever been to. Along with the standard sauna, steam room, and whirlpool they have a swedish shower, eucalyptus relaxation room, an outdoor waterfall grotto, a rooftop pool, lunch/dinner ordering and complimentary muffins and cookies, teas, coffee, and prickly pear lemonade all day.
I have had a relaxation massage and a pregnancy massage. Both were wonderful. The pregnancy massage was especially wonderful because they had a cutout in the bed so my belly could fit while I had a massage like a normal person - instead of having to be on my side which is what other places I have been to typically do.
It's very very expensive but worth every penny! Spend a few hours there and go on a sunny day to enjoy the rooftop pool.