Antonio's place is truly the finest AirBnB we have ever stayed at anywhere in the world! The location is the best you are going to find anywhere in Firenze. It's in a great and safe neighborhood, it is very spacious, very clean, has air conditioning in every room, strong Internet with WiFi, and there were cafes, restaurants, and shops lining the street so you never had to walk far to get to anything yet it's far enough away from the masses of tourists that clog the main streets. If you want to get to the Duomo it's less then 5 minutes walk, the Palazzo Vecchio and Ufizzi Gallery are only 7 minutes tops and the Ponte Vecchio is less than 10 minutes walk. You just don't get any better than that.
Also, Antonio is quite the local expert so he was full of incredibly helpful advice to help us get around town and he is so well known and so well respected around town I felt like a big wig whenever I would drop Antonio's name at restaurants and cafe's that he recommended. He runs a travel blog, by the way (www.ItalianEnthusiast.com) so I would encourage you to check it out even if you're not staying at his place. I give this place a firm 5 star rating and HIGHLY RECOMMEND!!!