I stayed within Duncan's flat for nine days. I'm listing below Pros and Cons of the apartment.
PROS: the flat is conveniently situated at two minutes of walking distance from the tube and from some mini markets; there are useful shops and restaurants in the immediate surroundings. Duncan has been extemely helpful and attentive host, always prompt to answer and help in case of need. I couldn't hear any noise whatsoever, during the night, coming from outside or from adjacent flats.
CONS: the bathtube was definitely in a bad condition and the shower nozzle couldn't be fixed anywhere when washing. In the kitchen both oven and boiler, even if functioning, were in a bad condition as well. The kitchen had no table where to eat and one had to exploit a small one-place desk in the bedroom. The flat is not exactly what it seems from the pictures: in fact, an Additional Photo shows an additional room whose door was actually closed and therefore inaccessible when I stayed there.