I have been coming off and on for 2 years now, I would visit more often, but it is a hike to get to Tempe. The benefits of floating are beyond debate, you will feel better both physically and mentally.
The only complaint I have is they need to do a better job sound proofing the rooms. On both of my past 2 visits, I was able to hear people speaking sporadically during my session. Once the sound is addressed, I have no problem giving 5 stars.