Very nice space and well located apartment. You have some supermarkets at a walking distance from the apartment, as well as some good restaurantes.
10-15min walk from the Basilica of Saint Peter and 10min from a subway stop.
Many bus lines also take you from the apartment to downtown.
The apartment is great to accommodate 4 people, as long as it is not 4 old people. The double bed is on the 2nd level and the stairs are not so friendly to older/elderly people.