Tony and Kerry have a room to rent through airbnb in their appartment, which is always clean. I had wounderful experience with them. They were kind and offered me help and advice on what to do/visit in London. It was a great experience staying with them!
The only thing I would mention is that there is a little noise from the railroad lines about 500 meters from their appartment. Earplugs shall help for very sensible persons.