We stayed here for one week with our family of 5 (3 young children) to visit London, and we like to have a lot of space. This house was perfect for us. A real queen or king size bed in each of the 5 bedrooms (not counting couches or mattresses etc). 3 full bathrooms plus a separate toilet room. Large kitchen with giant table. 2 sitting rooms.
There are a lot of stairs to get to the top bedrooms, there is no microwave and no TV. The kitchen does have a very nice gourmet stove-oven, and is fully stocked with plates, cups, glasses, pots, pans etc. The washer and dryer in the basement was a key feature for us as well.
The neighborhood is a very nice residential street, safely and easily walkable, just a few minutes walk from some restaurants and small grocery store, and about 10-15 minutes walk to London underground station and many more stores and restaurants.
The check-in experience went very well, with the housekeeper being there waiting for us at the house even though we arrived quite late on a Saturday evening. Sue was also very responsive to us throughout the reservation and planning process.
If you like a large house still within comfortable reach of London sightseeing sights, this is perfect. We will certainly stay here again the next time that our family visits London.