Valentina's place is perfect for a short stay. It has everything that one needs when traveling on a budget.
Having a private bathroom is a big privilege, considering the price of the place. There are 4 rooms in total in the apartment, but the rooms are very private, I never felt any discomfort with other guests, whom I barely seen or heard.
The location is great, it is 5 min walking distance from the train station, and you can easily access all the sightseeing by foot.
I would definitely consider booking this place again when I am back in Florence.