This place is phenomenal. Bright, airy, comfortable, central. The photos on the site do not do it proper justice.
The location- close to shopping, walkable from the Santa Maria Novella train station, walkable to everything in historic center. For sleeping, it was very quiet during my stay. I'm not sure how it might be during a busier tourist time but I couldn't hear much from the sleeping loft. There are all kinds of amenities available nearby- great restaurants, gelato, groceries. Your high end fashion shops are right around the corner, and banks, historic points of interest are all also easily accessible.
The apartment- so relaxing. Very clean. I know I probably read that there was a washing machine when I booked the place, but I had forgotten until I got there, and after traveling it was nice to be able to wash some dirty clothes! The kitchen is small but has everything need. There is a grocery store just on the other side of the river so you can cook dinner if you're not eating out. There were a couple of times during my stay that I was so comfortable in the apartment just looking out the window that it was difficult to motivate myself to leave to see things! The loft bed was very comfortable. There are some stairs you need to climb once you come back to the apartment, but I appreciated that after some of the good meals and gelato! The wifi can be a little spotty so here's my advice- stay off your devices, you're in Florence!
And finally, your host Matteo- ten stars! He made my stay very easy. His communication was excellent from the moment I booked the place- including a walking map from the train station. He was on time for check in, he carried my heavier bag up the flights of stairs. He went above and beyond on so many extra niceties, and explained they layout and use of the place very clearly. He left out guides and personal recommendations. His pride of ownership shows in the upkeep of the lovely apartment, and he even arranged my airport transportation for my departure. His attention to detail sets a really high standard for an AirBNB host, and since this was my first experience with AirBNB, I hope that's not too tall an order. I am so impressed by my experience with him, and hope to be able to stay at his place in the future.