We really enjoyed our stay at Caterina's apartment!
The flat is really close to the Vatican City and the city centre of Rome is easily reached by bus. The stop is just 3 minutes away. The area is full of nice restaurants and bars, and a really good supermarket is just round the corner.
Communication with Caterina was nice and pleasant, she gave us some advice regarding getting to the apartment from the airport and getting a weekly transport card. We really appreciate that!
I truly recommend Caterina's apartment to all the travellers coming to Rome.
Hope to come back one day too!