Exactly what I was expecting from an AirBnB experience! Fabiola is an amazing host she gave me some precious advices about Firenze, as well as a very friendly person. She is enthusiastic and passionate, it was a pleasure communicating with you! She let me borrow her map of Firenze, which saved me multiples time. The room was nice and there was a good smell too. Everything was clean, shower works great and there are some accessories in the kitchen (toaster, kettle). I didn't felt as a stranger in someone's home (even though I was) thanks to the hosts, their hospitality, because they made me feel comfortable. However I didn't saw Fabiola and Francesco too often even though I stayed 4 nights.
The fact that there is another room rented by another tourist allows you to meet new people, which is part of the AirBnB experience. The others tourists were very respectful and likeable, at least during my stay.
About the location of the appartement, I first thought that it was far from the center but it's actually very close from the Duomo (6min walk). His proximity to the train station is useful when you arrived from another city of Italy or if you want to visit other cities. The neighborhood is okay, the street is a "main" road so there are people walking in the evening, which makes is safe.
I'll definitely come back again, thank you for everything!