We really enjoyed our stay at Sarah's place in Chelsea. It was a great place to return to at the end of a long day of exploring. The place was very clean and relaxing. Beds were comfy.
We enjoyed the location. The closest tube stop was a decent walk, but the flat was very close to several bus lines (which we enjoyed much more than the tube anyways).
A plus for us was that there was great running to be had in Battersea Park every morning.
Simply a wonderful stay and would definitely return!