I spent 3 nights at carla's place, and it was really nice. Carla was available even if I arrived quite late and a bottle of beer was waiting for me in the fridge.
The room is lovely, really clean and quite big, with a table for breakfast. The bed is a bit hard as it is a convertible sofa, but this was no surprise as it is specified in the description of the room.
The bathroom is shared but always clean and available.
The area is really calm and close to buses or tube, so really convenient even if far from the city center.
Carla is a really great host and I would recommend her place.