I stayed in London for a week-end and I could not find better than Grace's place !
The location is very central, close to many transports, and in a very safe area.
The place itself is great : very luminous and spacious (it is even bigger than it seems on the pictures). The room is locating at the opposite of the apartment so you get a lot of privacy.
Grace was a great host, reachable and proactive. She gave me great recommandations for restaurants and where to cruise around the city.
It felt like I was at a friend's place and I would definitely come back when I visit London again.