My girlfriend and I spent 6 wonderful days at Gus' and Lynette's flat.
It was very cozy and clean and we felt at home right from the start - a great homebase to explore the city from!
The flat is located in zone 3, just outside the city center, but very well connected by bus (stop is right infront of the door) and by underground (Victoria and Piccadilly line).
Gus and Lynette always responded quickly to any question we had and had perfect recommendations for pubs nearby :) We would definitely stay there again!