Staying at Carola's place was very nice. She's an easygoing person and communicate to her was easy and precise. She also provides suggestions on where to go or what to do.
The room is pretty much alike the photos, the matress is comfortable and there's enough space to feel comfortable.
Room, bathroom, towels and kitchen were organized and clean. (To reach the bathroom you have a small stair, so if it is a matter you, you'd better contact her before).
It is true that you can hear some little noise from the street but for me it was not a problem. As said before, there's no big mirror ou lightspot in the ceiling (only indirect one).
Oltrarno neighborhood is perfect is you want to be close of Firenze's main attraction but far from the crowd.
For me it was the perfect choice in Firenze.