Stefan was a wonderful host and extremely communicative from the moment we made our booking (months in advance) all the way up to our arrival and through our departure. We had no issues with finding the house or checking in with the guest manager.
House itself is fantastic: extremely clean, well furnished, and very spacious. The layout was great for a large group (6-7), with private bedrooms but also a central dining/common space. Only disclaimer I would make is that this is a townhouse right in the middle of the city, so the house itself has a lot of stairs (as should be expected), and there's the usual ongoing city noise both day and night (which again, should be expected given its location, but may be an adjustment for non-city dwellers).
On that point, this location is absolutely phenomenal for anybody looking to explore London. Right in the heart of West End, we were a leisurely walk in any direction from pretty much everything a visitor to London would want to see. The neighborhood itself felt very safe both day and night with a number of fantastic bars and restaurants, and only a 10-15 minute walk away from all the restaurants and shops in Oxford Circus, Covent Garden, SoHo, Mayfair, Bloomsbury, Knightsbridge, etc. Other great areas like Westminster, Kensington and Southwark were only a bit further by walking, but also cheaply accessible via taxi or tube. The house actually sits less than a block away from a tube stop, but honestly if we hadn't visited whilst it was freezing cold we would have just continued walking everywhere.
Overall we had a wonderful experience staying at this house, would definitely recommend for anybody looking to explore central London.