I actually lived in a different flat, but the layout is exactly the same.
First of all, Gianluca, who doesn't live in the flat, is a superb host. He is very responsive and any quirks there were got sorted straight away. The flat itself is freshly renovated, I was one of the first people to move in. Therefore, there is not much to complain about regarding the interior of the flat. The single glazed big windows and the walls and ceilings to the other flats let in quite some noise, but there is little, the landlord can do about that. Having lived in Islington before, the area is quite rough at first glance, but I had no problems and there are plenty of shops around. Public transport is also near by.
To sum it up, I would come again!