Isabella, who was our host, was very friendly and available, provided us with useful tips and made the trip go very smoothly.
The flat is just as described, perfect for two people, the room is large and comfortable and the bathroom is very nicely done. The bedroom gives onto a road but we had no issues at all with noises.
It's a 15 minutes walk from the city center which is very convenient. I would definitely recommend this flat to anybody willing to spend a great time in florence!