The apartment is quite big. The rooftop terrace is beautiful and offers shade (tent).
Communication with Roberta was very easy. We were greeted by her mum and check in and check out were without any problems.
We came by car and info for next guest coming by car is: don't follow Google maps! It will lead you through very narrow streets and we decided to turn around to look for another way. So take the Via Plebis Rei and afterwards Via delle Mura. Much easier!
The neighborhood... Not sure if we just expected something else, but in the beginning we did not feel completely safe. This feeling fortunately weakened the longer we stayed (4 nights).
Overall it was a good stay!