Richard's place is very comfortable and stylish, and excellently located less that 5 minutes' walk from Balham station. I found Richard to be very accommodating and helpful. Would happily recommend him as a host to any AirBnB-ers wanting to stay a short trip from central London without paying central London prices.
For me the only issue was the street noise, as it is a very central location in Balham, very close to a major road. But I am a particularly light sleeper and I am more accustomed to the quiet of the countryside. I'm sure a more urban traveller or heavier sleeper would have no issue with this.