The annex is perfect for one or even two people. Alison was very nice to us and always available and patient.
I think adding a couple of shelves in the bedroom and some hangers in the bathroom would be really helpful because we barely had space where to put our stuff (we had to keep our clothes in the suitcase). Some surfaces were a bit dusty and overall the flat could have been a bit cleaner, but we enjoyed our stay there and the view on the park was really nice :) recommended if you don't mind taking the bus to the city center.