We had a wonderful stay at Rachel's place. The location was absolutely tops: in the heart of SoHo but off on a quiet lane with the bedroom in the back. We slept well and were very comfortable, but we weren't there very much, as there is so much to see and do in SoHo and all over London. There are wonderful restaurants and shops galore within minutes walk of the place.
For other Americans considering Rachel's place (and even most UK hotels that are not American chains), note that the UK "King" bed size is an American Queen size. Their Queen we would call a Double/Full. The mattress was very comfortable and there was plenty of space for us; but for folks expecting an American King sized bed, they would be surprised.
Rachel was very communicative, and went out of her way to be sure check-in went smoothly after our checking out of a hotel in a different part of London. Would definitely stay there again!