I recently spend five days there. I went to both 11 and Sauna Fox. For my tastes I enjoyed Sauna Fox more. It was in a better location than 11 i.e. I didn't feel too sketched out waiting for an Uber in front of it. The location where 11 is located is quite rough, even by Brazilian standards. Also the GPs in 11 are quite pushy and to my tastes less attractive.
GPs will try to renegotiate in the room though, so be aware of that.