Very good. The nail bar is in the middle of the reception of the gym though, so not the most relaxing - my nails look great though so that's the only downside. The pedicure was done in a little corridor next to one of the massage rooms - again, not the most relaxing location but the woman did a great job of my nails.
The lady that gave the massage was very friendly, the massage was amazing all the staff at The Circle Gym and Spa were friendly and professional. I would definitely recommend it.