My family stayed here for our kids' first trip to London. While we were further out from the city center, it was very easy to get around. There are several restaurants within walking distance as well as a nearby grocery store.
Gerda was extremely responsive and the guide she provided was very helpful and includes things you may not even think about needing until you are there!
Our place was very clean, our beds were comfortable and the kitchen had everything we needed. If you are new to London, I recommend watching a YouTube video on how to use public transportation. It's very efficient, but it is good to understand how it works if you are touring the area.
We had a great lunch at the Queen's Head and my husband became a regular at Gail's Bakery. They had great coffee and croissants.
As prior reviews mentioned, the steps to our flat are something to consider if you are physically limited. Sreet sounds could be a challenge for light sleepers.
Overall we had a wonderful stay!