We had a very comfortable short stay at Priscilla's and Lorenzo's apartment which is located just two steps away from the subway (Linea A). Nearby in the area of Re di Roma (which I like a lot because it's central but not crowded by tourists) you will find lots of small boutiques, supermarkets, fast food places and restaurants as well. It's quite close to San Giovanni and one can even walk to the Colosseum and other places.
The apartment itself is lovely and very clean! New furniture and an amazing bathroom, we loved the small details such as Shampoo and stuff, also the kitchen is well equiped with things like salt, tea, coffee etc.
The only thing one might miss is a balcony or a view because the apartment is located a bit below the ground floor so you can see the sidewalk, but that didn't bother us at all.
Check in and communication with the hosts went perfectly.