I enjoyed staying with Terence and Hilary very much!
I did not actually meet Terence, but Hilary was there and she made my daughter and me feel very welcome. We loved 'fluffy balloon' as well. ;-)
The pics in the AirBnB add gave a good impression of the house and the guest room. The room was nicely decorated, comfortable and conveniently located at the first set of stairs.
We had our own set of keys and could use the kitchen and bathroom any time we wanted to. We were out and sightseeing most of the time, though.
I enjoyed the neighbourhood: lots of nice restaurants and pubs. A short bus drive took us to Highbury & Islington, on the Victoria Line, which provides access to the inner city.
I'd recommand the room and the hosts to anyone: we really enjoyed the privacy and going our own way, yet from the other reviews I get the impression that if you'd like some more interaction, Terence and Hilary are very forthcoming as well.