The apartment is located in the south of Florence, 40 minutes to the city center by foot or 15 minutes by bus (the stop is very close). The windows open on the street with a lot of traffic and corresponding noise. It's not too bad though since the frames are well sealed.
The place turned out to be a little different than we expected. It was quite compact and darker than in photos. There was dust on some surfaces; the bathroom is very small, and its equipment is not very new, but seemed clean enough. Also, the apartment was very cold. We tried to find a way to warm it up, but didn't succeed. We could contact our host, but instead decided to put on some extra layers of clothes. So I can't say if this problem is fixable or not. But the pro of the situation with the temperature was that we slept very well, under warm blankets :)
Massimiliano was welcoming and nice, and left us buscuits, pastry and juice. Also we were provided with an extensive guide with tips on transportation and places to eat and shop, etc., which we appreciated. Thank you, Massi!