I would not change a thing about this experience. Saverio-the host-was so communicative about the whole experience. He responded promptly to emails and texts during preparing for our trip.
Once we arrived, he met us on time at the apartment, showed us around and gave us incredibly helpful hints for exploring Florence (restaurants nearby, grocer, etc).
We had a group of 6 (3 couples) and the apartment was perfect for us. We each had our own bedroom and bathroom, with lovely common areas for gathering. We spent a great deal of time on the balcony in the evenings, which was a great retreat after long days of sightseeing.
Everything was comfortable, clean, and updated for an extremely comfortable stay. The location was great-close enough to walk to all of the big sights in Florence, but still has the local neighborhood feeling that can be hard to find in a city with so many tourists who have come to explore the wonderful culture.
We would definitely stay here again, and several in our group have already made comments about how nice it was!