Location: very close to the Barberini station. But if you are bringing large suitcases like we did, mind you, the road inclines. The apartment is located in a quite street with no traffic, however the police car wanders around every once in a while therefore the place is relatively safe. There is a police standing by at all times at a nearby station.
Interior: even better than we expected! Squeaky clean and Serena has been very generous to us.
Looking forward to staying at her place when we are back in town.