I stayed in this studio for 5 days. The room was sunny, quite spacious for 1-2 guests, however the bed could be a little bit bigger for 2 people, also there was only one duvet for both. The bathroom was small, but it was just fine, maybe the host could add more of toilet paper next time. The kitchen was small too, but sufficient. What we were missing were more kitchen equipments, there was no sharp knife in there, also some sponge to wash the dishes (we only got a dish towel, which wasn't very practical). Also we got only a small dish soap, it really wasn't enough for 5 days.
The area was quiet, there were only family houses on this street, so it was very nice and peaceful there. The Kilburn undeground station was a 5 minutes walk from the studio and in 15-20 minutes we could get directly to the centre by Jubilee line (Westminster, Waterloo, London Bridge).
To sum up, I wouldn't mind staying here the next time I go to London, only the host needs to work on the details more.