We really loved staying in Iacopo's flat! It is big, very well laid out, cosy and very comfortable. Felt like a home. We especially liked the kitchen: Everything you need to cook with the wonderful ingredients you can buy in Italy is there.
The location is also really good: There is a supermarket, a market, a butcher, a great bakery (Leonardo) and everything else you might need nearby. There's also a ton of restaurants in the neighbourhood and all the sights are just a short walk away. Just be aware that the flat is in a very busy, touristy area - you can hear that when the windows are open. However, once they are closed: Absolute silence, as the windows are great and of high quality. We slept very well and never had any issues.
While we were there, Iacopo also installed a new AC - much needed, as it gets super hot in Florence in summer. The AC works like a charm and keeps the flat nice and cool even when it is very warm outside.
There are a lot of stairs to get to the flat, but that did not bother us: Free workout to work off the many gelatos and pastas you'll eat in Florence.
Internet works also really well and is fast.
In addition, Iacopo was always available when we had questions or problems - he is super responsive and very nice.
A+ Airbnb experience! Thank you, Iacopo!