10 minutes walk to Vatican City (but there are not a lot of people walking up the street leading to the building, specially at night time) - I would said it's a GREAT STAY if you have a guy with you, not for girls alone.
I had to cut short my stay because there were 2 guys ringing the doorbell and knocking on the door for over 2 hours, saying a lot of different things (one even said he was with the police), trying to get inside the apartment at all cost - but the apartment owner was SUPER FAST to answer and he was ok when I asked to cancel the last few days of my stay!