Allan was a great host and the house is really really lovely. He was always available to answer my questions, even though he was mostly away on vacations. Also, a nice detail was the excellent tourism guides in the room.
The place is very close to the train station and only about 30 minutes from London's most famous touristic spots. The only inconvenience, if you plan to arrive by bus after the tube closes, is that it takes about an hour. Even so, the neighbourhood is excellent, so you feel safe walking there late at night.
Overall, I had a very pleasant stay and recommend Allan's place to anyone.