Great flat in the heart of London. The location was perfect and close to everything. It was a 3-5 minute walk to Knightsbridge tube station and easy to get to from either Heathrow or Gatwick. Grocery stores, cafes and restaurants are within a 5 minute walk (we ate Paul croissants every morning)!
The apartment was exactly how it was presented online. It was clean, the beds were comfortable and there was enough space for our party of six. The hosts were extremely responsive and they were even able to accommodate our early check in request (as our flight from Seattle landed in the early a.m.) As others have mentioned, there are A LOT of stairs, as it is a five floor flat, so if that is an issue for you, be advised. I would highly recommend this apartment/flat!