Lovely stay in a quiet and green part of London. Bettina is a great host and makes sure you're doing alright and know how to get around the city. The room is comfortable, clean and a good size for a home base when exploring the city. It's about an hour with the train into Central London, so just make sure you check when the trains and buses are running through the day and when the reduced service is in the late nighttime.
Bonus points for fun conversations in German for anyone from that corner of the world, would stay again!