Compared with the spa at Wynn, which we found excellent but too pricey ($600+tip for a married couples' massage and use of the spa), this place was very good. Great massages by Inetta and Jiselle, which left us very rejuvenated. The cost was $100 less, still a very tall $415+mandatory 20% tip for a total of $493 or so, but overall we were happy.
I will say that the spa itself was good but not great. Good dry and steam saunas, a too-hot jacuzzi, and then no cold bath or other way to cool down, which is standard in Japan at these places. So I'd like to recommend that the company consider adding a cool bath (20 degrees centigrade or a little warmer) for guests to cool down with. Also, the relaxation room here was far less than the awesome "man-cave" at the Wynn, which I could have spent hour in. Though the price is $100 less overall so I can't ask for everything.