Amazing location (literally around the corner from the Duomo) and very easy to get to from the train station.
The apartment is very well kitted out with anything you might need (appliances, towels, heating/AC) and is very well presented. We were even more impressed by it in person!
The only downside (and this need not apply to everyone) is that due to the thin windows and shuttering, passing vehicles and people on the street below may as well be passing straight through your room.
The host met us to hand-over the keys exactly on time and gave us a crash course on things to see in Florence during our stay and was otherwise very helpful.
Wouldn't hesitate to stay in one of their properties again!