Hey!
We were 4 people for one night and we had to pay extra 14€ communal expenses. If you have to go to airport (Leonardo Da Vinci) suggest you to look a different apartment on the other side of the park. By car from this apartment is ~30min, by public transport ~2 hours. If your flight is in the night or late evening or early morning you have to take taxi, which costs ~50€. Apartment was okey, but we are not happy about this place.