If you want to stay in the best location and don’t mind a little street noise, stay here! We were in Florence for 4 days and this was perfect for us. There was a washer (HUGE PLUS) and a small kitchenette which was perfect for making lunches and breakfast to save some $$.
The location is less than a block from the Duomo and a few blocks from The David statue. It is also really close to the train station (which takes you from the airport as well). It is a bit noisy, but nothing to lose sleep over as long as you’re not a very light sleeper, that is. I would probably bring ear plugs next time to make it a little more comfortable, but honestly for the location, the noise is expected.
Our hosts went above and beyond. They gave us local tourist tips, restaurant lists, and tips when buying leather or other goods at the market. They were also kind enough to order us a taxi in the morning for our flight since we were leaving too early to take the train.
Overall, great place and I would stay there again!