We loved Amen's & Marco's apartment - big, light, comfortable & clean. Provides enough space to rest after a full day in Rome even for a bigger group (there were 6 of us), kitchen was well equipped to cook simple dinner. The apartment house has a lobby-man, plus we parked the car in a garage - both of these made us feel really safe.
We appreciated Marco's welcome at the beginning and all the information he provided (shops, public transport, taxi-pricing, etc.) + map of the city.
PS There is lovely breakfast place just at the corner of the street, bus stop also in a walking distance.