The apartment is very nice, light and clean, very close to metro station - 3 min walk, and very close to city center. The neighborhood is nice, there are some very good cafes close to the apartment
It is very easy to get to / from airport - 30-35 min by regional train from Fiumicino.
Hosts are very polite and hospitable, Marco and his mom greeted us very well, helped us with transportation (from airport and around the city) and provided some information (booklets) about Rome and Italy.
We will definitely come back to this apartment when we come back to Rome!