My contact was Marilaria, who was the perfect host, not only accommodating an earlier check in for which she had to organise a cleaner after I had mixed up my arrival time, but also always being available via social media and promptly answering any questions that I had.
The location was perfect for me since it was very close to the Vatican, which I went to visit twice. It's also walking distance (20mins) from the centre and sights such as Fontana di Trevi and the Spanish Steps. The neighbourhood is chilled and safe, and has supermarkets / cafes / restaurants nearby.
The accommodation itself is very much as advertised, and easily accessible via keypad.