Wow! What a place! and Giacomo is an excellent host!, if you really don't want to look every review of every place in Florence and just want the best possible place for 2 or 4 persons, close to everything and a good communicative host helping you everytime, don't look further this is the best choice.
Complementary wine, tea, snacks and always communicative and trust me, the place is much nicer than the pictures!
Traveling around the world i have been to so many airbnb's and is really difficult to find a place like this (getting what you paid) and specially a host like Giacomo.