This is a family home that is rented out when they are away. It is best for families with older kids. We stayed with an 11 and 15 year old. Because it is someones home, it has everything you would want, but it is also a bit cluttered in some corners. The courtyard was a treat for a central London location. The tube was half mile walk but the buses were right out front or around the corner. The bedrooms facing the street were a bit noisy with the window open. I don't know if there was air-conditioning and if it were hot you would want it.
There is a full on market a couple doors down that was open until 10:30 every day.
Overall it met and exceeded all our needs and expectations.
Valerie was immediately responsive to the questions we had. Check in and checkout were very convenient. They (Valerie's husband for check in and her brother for check out) were there exactly when we wanted them.