Clean, comfortable, and spacious room (the same goes for the flat overall). The neighbourhood is very quiet, and Shah (the owner) is very kind, respectful, and accommodating.
Further, the location is great. There is an amazing public transport connection with fast access to the whole central London as well as a lot of grocery stores, restaurants, and bars nearby (5-15 min walk, depending on how picky you are).
In sum, I really enjoyed my stay and would strongly recommend this airbnb to any single person valuing peaceful environment, comfort and access to the city.