Leanne and Andy's Air BnB is highly recommended.
My stay coincided with the national rail strike and a bitterly cold spell so getting about London took longer and my arrival time was later than planned. But Leanne was very warm, helpful and welcoming.
The room is a private nook at the top of their lovely, calm family home. Location is great for buses to central London. Nearby Lordship Lane has coffee shops, book shops and a really comfortable independent cinema, the East Dulwich Picturehouse.
Clean, comfortable, safe, private, convenient: what else do you need in an Air BnB?