Cannot recommend this place highly enough for anyone wanting to spend a little longer in London (I stayed over two weeks)! I'll kick off the review with Steve who was genuinely a great host who made you feel extremely comfortable in his home and was always open to answer questions. I enjoyed the banter with Steve throughout the trip, an hour in front of the television with him guarantees laughter i was in stitches on a few occasions.
The place is as described and feels better than what the photos suggest, the bedroom is spacy, plenty of wardrobe space, large bed, sunlight and fresh air. It is very well connected to public transport and close to Clapham Common and Balham. The house is clean, well organized and you don't hear the noise of traffic, neighbors or any of that nonsense.
I can highly recommend staying with Steve if you're planning a trip to London.