We (my mom and me) stayed in the apartment for four days. The host was really helpful, before we arrived and while we were there waiting for us in front of the building when we arrived and leaving us a lot of Information about the area and Roma in general.
The apartment was spacious and very well-equiped and is situated in a typical resedential area with everything you need (bakery, bar, restaurant, supermarket)
You can easily reach the city center of Roma with the public transport in about 25 minutes (by tram to Termini station)
The apartment was really perfect. The only slight problem was that sometimes it was not completely soundproof and you could hear the neighbours, but after a long day discovering Roma we were usually so tired that we didn't mind. So we slept perfectly.
All in all a very good apartment that we can strongly recommend to everyone who wants to visit the wonderful city of Roma.