You get what you paid for here, great location walking distance to public transport and other places like Hyde Park, but its not a top notch flat. Bathroom was noticeably dirty, same as the carpets. The windows failed to close properly and the heating was very minimal, so it was colder inside then outside. We slept in our coats.
The host was responsive and helpful for check-in, as there was no specific address listed to map to, so we were lost finding the place. Very flexible check-out time as well.
Overall if you plan to spend most of your time outside in London, then this is the place for you as its really just a place to crash for the night. Good for small groups. Would suggest bringing your own slippers, shower shoes, and towels.