The house is cosy, nicely furnished and decorated. There are a total of four rooms, each with a pivate toilet and shower. The kitchen/living space is so cute with the couch and those four small tables; there is also a huuuuge variety of teas, coffee, cocoa... as well as everything you need to cook and refrigerate your own food.
Location: just perfect. Close to the station, within walking distance from any landmark in Firenze.
Although I didn't meet Valentina, the check-in and everything was very smooth. She is responsive and always asks if everything is all right.
The only thing about the room is that thermal insulation is not that good. When the temperature goes below 5°C (this happened at night when I was there), it gets pretty cold in spite of the heating/air conditioning. You may consider wearing some extra layers, or simply asking Valentina for more blankets. For a few days and for the price, it was definitely not a problem for me.
So, overall, I had a reaaaaaally nice stay and a gorgeous time in Firenze! Highly recommended ;)