Tommaso's appartment is located next to everything you'd possibly want to visit in Florence. It is easily reachable by train from the main station and we were never in need of public transport.
The appartment itself is very clean and has all the amenities one needs for a short-term vacation. The elephant in the room is the bathtub, which sits at the corner of the mezzanine. Mind your head in the mezzanine, because it is quite close to the seeling. The bathtub itself is obviously a great feature and the best way to relax after a long day out and about.
Tommaso is a lovely host. He gave us a tour of the place and briefed us on food and sight seeing, which was very helpful.
We'll definitely be back.