Best wax and facial I have tried in London since ages.
The rooms are a bit tiny, that's the only bad side, but it's super clean, the staff very welcoming and professional. I definitely would recommend 7 days spa.
I really liked deep tissue massage, it was so relaxing that I even fell asleep. The atmosphere was good, especially the music. However, the floor was very cold and if there was a rug it would be more comfortable. Overall, it was all great.