I've been before and it all comes down to whether you like Thai massage or not. Thai massages are quite hard and aggressive and even though I asked for it to be softer I still ended up a little battered. My back feels better though but god I wish it was gentler.
The best Thai massage I've had in London, so far. Very professional staff and service. The massage table was comfortable, and warm! The lady who helped me was very flexible to focus on muscle groups that needed attention most. I would recommend anyone who is looking for a relaxing massage to visit them!