I worked from Nicoletta's place for a week and explored Florence in the evenings and on the weekends.
Communication and check in were great, the apartment was clean and matched the description. The bed folding up into the wall is a brilliant idea and really makes good use of the space. The internet was perfect for working and the location can't be beat!
The apartment size is good by European standards (a studio), but North Americans be ready that it will be smaller than what you're used to.
One point I want to make for people who are light sleepers: this may not be the place for you. Even though the windows are double paned, you are right in the middle of Florence. You can hear tour groups and drunk people loudly walking by outside. On Sundays the church bells all rang at 8am. And sometimes you could hear the people in the unit upstairs.
Thank you for Nicoletta, Sandro, and Ludovica for being such great hosts!