Isabelle's flat is great. It is very well located as the tube station we took is part of a line which serves many other lines so it didn't take us a lot of time to get where we wanted.
The flat is very well decorated, roomy and clear in a quiet street. There is space everywhere and the well-tended garden is a plus in London (your own little green park). There are several shops nearby to stop to before getting back and Isabelle is always happy to guide us if needed.
Isabelle is a great host, ready to help on any questions and available. We had a wonderful stay and recommend the flat whether you stay for a long weekend, a week or more.