I booked based on good reviews but when it came to my appointment j couldn't find the place. From the look of google maps and guessing from the sign it was in the back of a phone repair shop behind a curtain? I didn't much fancy going in there.
There was no info on the treatwell page indicating where it was and a Google search wasn't much help, they don't appear to have a website. It was raining by this point so I gave up and went home.
I also couldn't cancel my appointment through the app.