Claire's place was warm and nice, it's little bit far from city center (around 25-35 min with bus or subway), but it not at all inconvenient. I went to London primarily for the Harry Potter play and other musicals and theatres, that's what I mostly did. So for the theatre fans out there, this apartment has, although bit far, really great position. You have the bus 29 in front of the apartment which takes you directly to the center of West Side, it even stops right in front of the Palace theatre, from there you can reach other theatres within walking distance.
The apartment itself was great as well, very well equipped, not to mention beautiful. Although I never met her in person, Claire was friendly, patient and helpful with my questions. I had a wonderful time there and would definitely recommend Claire's place.