This flat is awesome and so is the host. He even meet us at the train station and walked us over.
It's in a neat little corner not too far from the Ponte Vecchio and the best gelato I've ever had (La Carraia). The Uffizi gallery is just past Ponte Vecchio. All within about a 10 minute walk. Florence really isn't that big.
The flat is plenty big and had heaps of room with a sofa bed for the extra 2 people if you've got them. Otherwise a living area.
There's not much of a view, but who spends that much time in their hotel anyway? Shouldn't you be out enjoying Firenze?
Also there was a fan provided, which was great because it does get a little warm on hot evenings. Shouldn't be a reason not to book though. Especially if you're not coming at the height of summer like we did.
Other then that, come and stay here. You won't regret it.