We stayed at Antonia's place during Easter week-end and it was really nice of her and her partner to wait for us since we arrived at their place at a very late time and someone was here to welcome us. Antonia's flat is in a very quiet neighborhood, close to tube station which is perfect to head directly to London's sightseeings. She also gave us some local addresses to have a drink and try some food which was very helpful and nice of her.
The only tiny problem is that there is no table in the flat which is difficult to take at least breakfast. Then, there is no television, which wasn't a problem for us since we were visiting the whole day and came back at the flat only late at night in order to go to sleep.