This was the best Airbnb experience we've had and I definitely recommend staying here when visiting Florence.
I booked this place at last minute and didn't know what to expect but it was even nicer than the photos: very stylish, clean, and charming, and in a great location -- about a 10-15 minute walk to the tourist hot spots across the river but just far enough out to have a sense of real Italian life in an area full of restaurants and cafes. Check-in/out was quick and easy too.
The apartment overlooks a small piazza with a restaurant, bar/cafe, and gelato place, and on weekend nights especially, the piazza was lively until late hours with live music, conversation, singing, etc -- think someone strumming a guitar and people singing along, instead of booming club music. If you're a light sleeper and want to get to bed early, this is probably not ideal for you, but we thought this definitely added to the charm and we purposely kept the windows open so we could listen in to the music. The place also had a lot of thoughtful touches that made it very easy to settle in: a very well-stocked kitchen, music player, washing machine, books, extra blankets, etc.
My only complaint is that we did not find any body soap for the (very cool) shower.