I came back to London after some eight months and, as I promised, I booked without hesitation for Sadaf's lovely house. The house is very comfortable, full of any amenity and well positioned for buses and underground service. I would recommend it to anyone coming to London and looking for a place in which to feel literally "at home" (the room is super comfortable).
Five full stars to Sadaf, very kind and always available to give you a hand for anything!