We really enjoyed our stay in London thanks to George and Martin. The appartement is cozy and the beds very comfortable.
It has also a great location since it is near Columbia Road which has a very beautiful flower market. You can also find really nice small boutiques in the neighborhood (art, pastry shops, home decoration, etc.). Also, it is quite easy to get to central london (about 20-30 min by public transport).
All in all, it was a really good experience.
Thank you guys!