The apartment is really more spacious than on the pictures.
However, it looks like a space that was converted in a living place. There are no windows you can open, so if you want some air, you have to open it directly on the the street with all the people passing by, or on a nice garden (we couldn't enjoy it because of cold). Air condition works well.
Otherwise, Pigneto is a nice neighborhood, you have two supermarkets nearby, nice (hipster) bars (we really liked Zazie dans le metro) and restaurants/osterias (Spagetti a mezzanote is a trashy jem for a late night pasta).
Less than 10 min from metro, bus and tram and then less than 20 min ride to Termini station.
It is much better than staying in a more touristic part of the city.