Carla's place is very nice. Isabella and Cecilia were probably two of the most inviting people I've met with while traveling through Italy. They showed us all the different things that were available to us in the apartment during our stay and even showed us how to work the laundry machine (most other places have the instructions on Italian making them impossible to use).
The home is very comfortable and clean. Almost everything is great the only thing i would say could be improved would be the bathroom but I understand that this is an historic space so improvement/renovations could be tough to do. There are 2 bathrooms but the shower was only usable in one where it was fairly tight to move in. But overall I would say it is a fantastic stay.