The apartment is very well located, it is close to the Cappelle Medicee and very near to the railway station. The entire building is quite old and damp and there is no lift, but the apartment is very comfortable, clean and well decorated: there is a big living room with a sofa, a tv, a hi-fi and a little table; the bedroom has a king size bed and a big wardrobe; the kitchen has everything it needs; the bathroom is small and there is no bidet (but it is not a big deal) but it is functional and the shower is new. Moreover, there is this cute little balcony with a table and some chairs where you can relax and eat something.
You will not be annoyed by the noise from the streets, so you will sleep well.
The apartment is very cool, so you won't feel the hot weather of Florence in the summer, but in case you feel it, there is the air conditioning that will save your stay.
Finally, I would recommend it to everyone. Silvia has also given us the chance to leave our luggage earlier than the check in time, allowing us to visit Florence right away (but it is not possible to leave the luggage for a while after the check out).