The apartment is fantastic, just as shown on the pictures. It was spotless clean and the same goes for the entry, staircase and elevators of the building. The kitchen is well equipped for those who want to prepare their meals there. The internet worked fine as well. At night, it was very quiet, even with the windows open.
There are two supermarkets nearby (5 minute walk) and quite a few cafés and restaurants and other shops. If you want to exercise or take a walk, there's a nice park with a lake just down the road, and a swimming-pool, too.
It takes 8-10 minutes to walk to the closest metro station, which takes you to the center of Rome in 15 to 20 minutes.
Communication with the host was excellent.