A room this size with 3 bathrooms servicing the house is a rare find. I stayed here for 3-4 weeks while looking for work, meaning I spent more time in the house than usual, but the size compared to typical houses in London made for a comfortable stay.
Location wise this is great, Clapham Common park 1 street away, cafes, restaurants and supermarkets all within 1 minute walk, then even more within 5 minutes. Clapham Junction 8 min walk, Clapham Common 5 min bus - these stations will get you anywhere in london.
Simon, along with other guests/permanent stayers are all friendly and willing to share local tips or a beer.