I too had a bad experience when redeeming a Group On. The overall massage was 2/10, not enough pressure and it just started to feel like a back rub. As mentioned by Christine L, the shower was horrible. Not only that, it barely worked. When the water finally turned on, it was scolding hot and nothing I did could make the water cold. Once I finally managed to rinse off the scrub, I hoped that the pedicure would be decent. I completely lost hope the moment I sat down.
I have never been so disappointed, nor have I ever been so disgusted by a "spa". I hope Group On will offer a credit or something.