Less than 10 minutes from Clapham Junction Station where you can also rent a bike a get a nice journey of the surroundings. Also, the buses can take you to the lively Brixton.
Christie is a careful host, I appreciated the stay at her home.
The weather was so warm I had to sleep with the window open, unfortunately in the early morning it is easy to hear some planes approaching Heathrow but hey, this is London!