This apartment is awesome. The location is on a quiet residential street, but packed with little mini markets for food, essentials, drinks, etc. Also the street has several very good, reasonably priced restaurants.
You can walk to the Vatican very easily, however you have to heavily rely on public transportation to get to the other big sites of Rome (if you don’t want to walk more than 30 min). There is a convenient bus stop less than a 5 min walk from the apartment, which was very useful.
The inside of the apartment is spacious and sparkling clean. The beds were comfortable and Maria Pia even had a small toddler bed put into the room for my daughter.
Maria Pia and her family live right on the next floor so she was very easy to get in touch with if we needed anything.
We will definitely choose this apartment again when we visit Rome.