It's difficult to find a private room with this good of a location in Florence for any less than this price. It's a short walk from the train station or the T2 tram from Florence airport, and just as close to the Duomo and other main attractions. For a short stay, it worked great.
The accommodations are simple, a bit like a hostel but with private bedroom. The two shared bathrooms were kept clean and only once were both in use. Darko is a helpful and friendly host, and communication was easy.
As light sleepers, the only down side was hearing other guests in the hallway, going to and from the bathroom or using the microwave, at night.