Adrian and Stephanie gave me a great welcome and made me very comfortable throughout my stay. I admit I found the building slightly unprepossessing when I arrived, and the lift a little bit claustrophobic, but the flat is very nice with a great view eastwards from my room towards the city, including the London Eye, and the Shard beautifully counterposed with the spire of the local Pimlico church, St Saviour's. Even better lit up at night. Adrian explained the history of the building to me and pointed out that it is Grade II listed and has won awards; by the end I felt really at home in Churchill Gardens. They also had good suggestions of places to go within walking distance, such as Battersea Park which I didn't know and enjoyed very much.
It is also in easy walking distance of Tate Britain (art), St John's Smith Square (music) and Victoria station, which is why I chose it.
Great location, comfortable flat, lovely people.