We loved our stay at Virgina and Piero's place. It's ideally located, near the Parliament so very quiet. Downstairs there is a great ice cream place as well as a nice café. It is reachable by bus (15 min from Rome Termini) and close to the Vatican and the Coloseum. The flat is perfect for a short stay (we were 2 adults and 2 kids), a bit small but again for 3 to 4 nights it's a no brainer as there are plenty of restaurants and supermarkets nearby.