I stayed with Mary and Ali when I had to return to London unexpectedly. Due to a travel mix up, I missed my check-in time, and Mary was very understanding and accommodating. The house is sparkling clean, Mary is a fantastic cook, and the bed was one of the most comfortable I have slept in on my travels. There are helpful instructions posted around the house for things like the bathrooms and kitchen, so I didn't need to worry about bothering them for little things. The location is a bit out of the way (it takes about 45 minutes to access much of central London on the tube), and there isn't a lot to do in the neighborhood; however it is convenient to Heathrow airport, and there are decent transit links to elsewhere in the city. I would definitely stay here again.