We enjoyed our stay at Federico's place. It is very convenient in many ways, walking distance to Coliseum, grocery close by and restaurants within a couple of blocks. The kitchen is well-stocked with cooking utensils and the wifi worked well. The bedroom has a large window and the kitchen overlooks a soccer field which we enjoyed. Federico and Dario were very helpful when we needed them, for a ride back to the airport and to turn on the gas for the stove.
Our only gripes are minor. The air conditioner made a groaning noise periodically, which was annoying. Also, the bath is a little tight by US standards. But the place is clean and so convenient that our minor gripes are over ridden. Be prepared for the walk up the stairs to get to the apartment. 3 flights.