Nice one!
This is my first experience with Airbnb, and I must say it's been a pleasant one....
Tina is a very caring host, and she made sure we felt at home, providing us tips about restaurants and about getting around.
The house is roomy and well kept, within walking distance to the main attractions (Florence is a small place anyway). Only drawback is the junction right underneath the apartment, which is fairly annoying, especially for those not used to traffic noise.
Besides that everything was perfect.... recommended