Violetta's flat was truly wonderful. On a quiet street in beautiful Kensington, it was only a short walk to anywhere you might want to travel in London (via the well connected Notting Hill Gate tube stop). The neighborhood was charming and the very clean flat had everything my wife and I needed: a great shower, sufficient heating throughout, extremely comfortable bed, reliable wi-fi, washer/dryer, and a nice kitchen.
Violetta was easy to communicate with prior to arrival, was kind enough to meet us prior to check-in time as our flight arrived early, and checked in with us during our stay to make sure everything was great.
When I come back to London, this is the first place I will check to see if it's available. Perfect all around.