The flat was enormous, so much space and really big comfortable beds. A well stocked kitchen, and a very nice warm shower. Definitely one of the best value for money Airbnb I've ever stayed in. The best part however, was how central it was. Everywhere we wanted to see in Florence was 15minute walk or less. Most of the time it'd only take us 5 minutes to get back after going out for dinner etc.
My only advice would be if you come in winter to bring some warm socks as the marble floors can get chilly!