We had a great stay as Helena's place. The room is very specious, bright, comfortable and private.
Helena was always friendly and nice and welcoming. She welcomed us with tea and cookies, and was always available if we had questions.
The flat is in perfect location right next to west hampstead's lovely main street where all the restaurants, pubs and shops are. We actually moved it across the street because we love this neighborhood so much. We highly recommend Helena's place.