This was our first time booking through Airbnb and it was a positive experience! Amazing location and view! If we come back to Florence, we would love to stay here again!
To break it down into details...
My host experience: Easy! We didn't communicate often other than getting room approval and scheduling a time to meet for the apartment keys. I didn't get a chance to actually meet the hosts, but they sent a friend to greet us. She was very friendly and told us a bit about the area. The hosts also leave a helpful guide about the city, listing places to eat and visit, etc.
The location: Super convenient! Right down the street from the Duomo! Short walk to the Accademia to see the statue of David. Close to all tourist attractions and close to the train station. When we arrived, we took a cab to the apartment from the train station because we didn't want to lug our luggage not knowing exactly where we were going. It ended up not being that far of a walk so we ended up just walking back to the train station when we left town. Other perks about the location are that it was directly across the street from a nice wine bar that also sells sandwiches and on the corner was a nice restaurant.
The room: Cozy and clean. Looks just as it does in the photos. It's on the top floor of the building and shares an outer deck/patio area with some other rooms. From here, you get a beautiful view of the Duomo. What's even better is that you don't have to sit outside to get this view. From the living room area inside, you can open up the window to see this gorgeous view. We spent one night just having a glass of wine inside and staring at the beauty of the Duomo.
Other room amenities: Towels and a blow dryer are left for you to use. Bring your own shampoo, conditioner, etc. It isn't a hotel so they do not provide this. They have all the items you might need in the kitchen. No microwaves so if you bring home leftovers, you'd have to use the oven. They provide a guide of Florence with a map for you, as well as their own detailed city guide. They provide a lounge lawn chair that we didn't use but would be nice to use for sitting out on the patio.
Other tip: There are 3 keys you will use to get in and out. The last key to get in was a little tricky to use. You have to jiggle with the door a bit to get it to work.

Overall, we definitely recommend doing business with Cristina and Raffaele! Loved this apartment and Firenze!