Federico was one of the most responsive hosts ever. Coming in from the airport we felt that the cab driver was ripping us off by inflating the price. We called Federico up and he said he will meet us outside the apartment so he can talk to the cab driver in Italian for us.
He recommended places for us to eat at as well as places for us to see. Any question we had he answered immediately.
The apartment was more than spacious (and the 2 bathrooms helped with the 4 adults staying there).

Halfway through our week-long stay he contacted us and told us he would like the opportunity to change the bed linens for us.
I would recommend him to anybody traveling to Rome.