Really can't recommend this place enough!!
Location: Fantastic! It's only about 10-15 minutes away by tram from the SMN train station/the beginning of the centre, so you have a bit of peace and quiet from the bustle of the centre. The room is located right across the street from a cinema, which, at night, is really lovely, because of the neon letters (but don't worry, the curtains work to block them out!). In the neighbourhood, within walking distance, there are also two eating places that I cannot recommend enough -- you have to try these -- Caldana, a nice little cafe that sells sandwiches, pastries, and coffees/spritzes, and Fratelli Briganti, where we ate the best pasta in our lives.
Room: Spacious and clean! The bathroom is private and in the hallway. There's also a cute, little balcony that we ate breakfast at -- definitely a great way to start the day.
Host: Mario and Caterina were great -- they were very communicative and made the check-in process very easy. They also provided breakfast in the room, which was so lovely of them.
Overall, we had a wonderful time, and next time in Florence, will definitely check out this Airbnb again!