This is a beautiful apartment --clean and well maintained. It was perfect for our family of 6 (2 adults, 4 children). The building is beautiful, and the apartment has an updated/modern feel in a classic setting (high ceilings, bright natural light, plenty of space).
The apartment is in walking distance to The Vatican/Sistine Chapel as well as Hadrian's Mausoleum. There are nearby restaurants as well as a great (small) supermarket 3 minutes away. There is also a very convenient bus route right out front where we were able to take public transport to the Roman Forum/Colliseum area as well as the main train station (Termini).
The ONLY problem we had was that the address on AirBnB is wrong! It should be 120 NOT 12! I would definitely stay here again :)