Gianmaria's appartement is quite close to Trastevere (walking distance about 5 Minutes).
The appartement is a bit outside of Trastevere, but the area is absolutely nice, safe and quiet.
For me, Trastevere is the best place to stay in Rome as there are really nice bars and restaurants.
Gianmaria is a very friendly host who really tries to make his guests as comfortable as possible.
We were allowed to check in earlier and check out later which we really appreciated!
The appartement was absolutely clean and better than expected! I think it is much better than in the pictures.
However, we were 5 people who stayed at his bed and one person had to sleep on a couch.
This bed was not comfortable as it was skew and there was no air condition in this room.
All in all - I can really recommend to stay at this beautiful place !