For our 3 city visit to Italy, I have to say this was our favorite Airbnb! Very hip apartment (we were traveling with 3 teens who exclaimed over the decor and layout) in a historic building close to everything in Florence. We learned about the history of the building and square that we were in from the guided Sunset Bike tour that we took - and I would also highly recommend this tour.
Our check in went smoothly with Niccolo meeting us at the apartment and giving us a tour of the spacious apartment and pointing out some places for groceries, bank etc. The apartment itself was clean, spacious and as I said very hip. At the time we were there, construction for a concert in the square was taking place but we never heard a sound in the apartment. My only note is that there is a fair amount of stairs to climb to get to the 3 floor apartment so take note if you have mobility issues.