We stayed at Melissa's place for a week and we had a very nice time. She wasn't there the first 4 days of our stay but we managed to make ourself at home. She was very available by text. Her place is very nice and the room is perfect. We enjoyed the garden every day.
The underground is nearby, so it's very quick to go to in the center of London.
Brixton Village is great specially when you want to have diner.
We had a very nice first trip to London.