Book this room. For nothing else, do it for the view of the Duomo. Pictures really dont come close to doing it justice. Once you see it in person, you will be absolutely amazed. We booked this place, and then a second airbnb which was supposed to be the "upgrade" and was more expensive, and that was a mistake. This room doesnt have many flashy amenities, but if you think of it more like a hotel room with an amazing balcony, it is so worth the price. Everything was new inside, the bed was comfortable, and it was all very clean.
Some Cons:
Many things were missing that were just kind of annoying. There was no shower door, no ironing board for the iron, there was a restriction on which closet space we could use. The most important thing, however, is that there were no wine glasses. In the heart of Florence, with an amazing balcony, there are no wine glasses provided? We had to go out and buy our own, and unfortunately didnt leave them behind. Other than those small things, it was by far the best place we stayed on our trip across Europe and even one of the cheapest.
To wrap it up, the balcony has to be in the top 5 for best views in the city, hands down. Location cant be beat. If youre thinking about booking this but between places, pick this one. You will not be disappointed.