We had a wonderful stay at Mario's place. He was an excellent host and provided us with lots of great options for gelato and dinner spots in the city (we second Mario's recommendations for Gelateria Valentino and Forno Feliziani!). The apartment is essentially adjacent to a bus and train station - making it so easy to get to Termini station, Fiumicino airport, or to the city centre. It is also within walking distance to the Vatican which was great for our early morning visit. The apartment was impeccably clean and comfortable!