Sarah was very accommodating with our requirements and very quick to respond.
We only had a short stay, but found the apartment well equipped and with good access to public transport and a huge supermarket. There are plenty of local bars and restaurants within easy walking distance. Very convenient to get the tube into central London.
The apartment is a little noisy from the road at the front. If you are a light sleeper I would suggest some earplugs. We did this and had no issues and the bedroom is at the back of the apartment. It is London after all!