Cosimo's apartment is very sweet, like a nest. The spiral staircase leads up to a tranquil bedroom, with the snug sensation of being under the eaves, a walk-in wardrobe and a very very comfortable king-size bed. Downstairs is a decent bathroom, and the tiny kitchen-sitting room which cleverly manages to contain all your needs.
The area is sort of on the edge of the centre. Thirty or so minutes on foot or five minutes by bus or Metro get you in to the heart of things. Five minutes walk from the airport train terminus.
BTW if you appreciate street art, start walking south (?) from the flat under the bridge. The buildings are stunningly decorated..
Cosimo was gracious and prompt to reply. The flatlet is all in all very good value.