We loved this apartment. It is located on the top floor of a six story apartment less than 10 mins from the train stationand a 15mins walk to the colosseum. We found the neighbourhood to be safe at nights and had no problems at all.
The apartment has a shared balcony with 5 other apartments and you can walk all around which was brilliant. One of the neighbours gave us a tour including climbing up on the roof!
We highly recommend the apartment. Gemma was brilliant and made us feel welcome whilst in Rome :)