This is by far the best airbnb place I've seen. It's really well thought in details (like where to put your towels or personal stuff while showering! sorry but sometimes airbnb apartments are made without any thought about how people act in real life).
In short: it's a great place to stay for a couple. The apartment is very romantic and nice:)
It's about 5 minutes walk from the S.M.N. Station and short walks away from all the landmarks of Florence.
The balcony doesn't have a "wow-effect" view as it looks right in the backyard of the building, BUT believe me it's for the best (otherwise it would be way too loud). You can enjoy quite and nice breakfast there.
From other perks: there's Netflix available in the kitchen TV!:)
This was the best stay in Florence I could imagine.