I rate each stay on two things. location and cleanliness.

Location, this flat is literally a half block from the tube station. It took us maybe 15 min to get where we needed to go. Also, there are many restaurants and shops with in walking distance. A few of our favorites was the Black Lion, very good food and service, Woody ( great food, service and price), and Roses, good food and the service is depending who you get.
This flat was also very clean and adequate for our family of five. My son had to sleep on a air mattress but he is 13 and fine with it. The beds were a tad uncomfortable for me and my wife, but that is a personal thing so i didn't take anything off for that. The sheets were clean and the bathroom was clean. Two big pluses in my book! I think we might stay here again next year if at all possible.