Stayed at Massimiliano's place for 3 nights in Florence in April. The location is absolutely central and walking distance from all major sights and nice restaurants.
The place is very spacious and full of interesting designware giving it a nice touch. The bathrooms are well set up and overall the place is clean and well equipped. The wifi was superfast, there was coffee and umbrellas, all of this was very helpful. We did not use the air conditioning or much of the kitchen, but seemed well equipped.
The check in and check out was stress free as it was all through electronic code locks, which actually it is quite nice as one does not have to bother about the keys and if there are more than one person living, they can come and go as they prefer.
Another positive is the view from the windows as there are no closeby buildings as it can be the case in Florence, so it has got a good view of roofs of the town and a little bit of scenery.
The only negative of this location is that below the building there is a lot of street vendors, which may be particular to that street in Florence, although it clears up in the evening and we did not feel it to be an issue.
Will definitely consider staying here next time as well.