We had a wonderful stay in London ! The apartment was comfortable, quiet and well decorated. The street is very cute and the subway just a few steps. The metro line is very close to the center of London. However, we suggest some things that could improve the comfort of the tenants, as a frying pan, a coffee maker, a coat rack to avoid leaving all his stuffs on chairs and mainly a place to hang wet towels after shower ! as there is not a real bathroom, it is not always very convenient. Also, envisage to add light above the wash basin in the corner of the bedroom ;).
After that, it would be perfect !