They are externally nice, very good at massage. My son and I were the first customers this morning. I was fine with the the massage, a little too hard with pressure on the knots (and I can endure quite a bit). But then he stretched my right arm behind me, in an arm lock style, and pulled my shoulder so hard that it began to really hurt afterward and has just progressively gotten worse. My suggestion is to tell them not to stretch you. Nothing hurt when I went in, now I really hurt.
I'll post if the pain goes away.