I loved to stay at Roberta's house. It is nice and spacious and close to a Metro station so that I could move around the hole week without moving the car. There is a parking really close to the apartment as well.
Roberta and Gabriele were really very nice and waited for me to arrive even if I was a bit late. They gave me suggestions on public transports, restaurants etc.
House has everything you need, I found also coffee and cookies for the breakfast which was a nice surprise from them!