Because it was my second stay at Riccardo's apartment, I felt more at home, especially that Riccardo and his family are hospitable and helpful.
We were only 2 but at 4 the flat would be convenient as well. It is unbelievably clean.
To the metro line is only a few minutes walking. In the area shops of all kind, open-air market, patisserie (if you are on a diet give a wide berth-coda di aragosta is delicious).