Paul was a great host. Even though he was not staying in the apartment most of the time, he was very helpful about everything. I spent 3 months in this place, and the location was perfect - I was able to walk to Oxford Street, Regent Street and Regents Park, and there were plenty of supermarkets and cafes nearby. Also underground and bus stations (including night busses) were in 5 minutes walk.
Overall, I highly recommend staying in his place, it is great for exploring the city.