We booked a long stay (3 months) in Camilla's apartment and we didn't regret it. The place is perfect. It's really quiet because it's not next to the street. It's also relatively cool because it's the ground floor and the walls are really thick and the windows are insulated. If it still gets too warm (it was 40 degrees Celsius in Firenze while we were there) you can use the airco. We used only one of the three available.
Camilla helped us with a permit for our electric car so we could park in the neighborhood. If you don't have a permit, you can't park for free near the house.
The apartment is located just outside of the center but everything is on walking distance and there are multiple public transport options close by.
The mini garden is a plus for this apartment. Not many apartments in Firenze have this.
If you plan a long stay and want to work in the apartment, i suggest you bring your own wifi router. The internet connection is fast but the wifi router is only 2.4 ghz and not all my devices wanted to play nicely with it.
We would definitively book again if it's available for our next trip.