I think this was the best AirBnB apartment I've ever stayed in! The place was really stylish and beautifully decorated and furnished. It was also functionally great with a lot of thought in terms of livability and amenities. For instance, the Wi-Fi was reasonably fast, the TV had an Apple TV already hooked up with Netflix, they had a small washing machine, an espresso pod machine, a really good hair dryer, and generally just everything we'd want to have for a week in Florence.
Also, the bed and pillows were incredibly comfortable. They were slightly on the firm side, but not at all "stiff". Even my girlfriend, who likes beds to be as soft as clouds, was surprised at how comfortable everything was and how well she slept.
The location was perfect. It was incredible easy to get to everything in central Florence, seriously about one small block from the Ponte Vecchio, but despite being so close to the busiest area, it was a side-street that was somehow very quiet all the time. We also rented a car for a few days, and were able to reserve space in Garage Lungarno, which was also about one block away.
Finally, Tammara and Luciano were amazing hosts. They gave us a booklet with information about the amenities and the city itself, including good recommendations from places they've been. Tammara even called a taxi for us early in the morning on Saturday to get to the airport!