If you're in Florence I would HIGHLY recommend booking this spot! It is incredibly spacious; there are multiple double beds and a sizeable lounge area with a well equipped kitchen. Two bathrooms, both with showers and toilets.
Edoardo met us and was wonderfully friendly and accommodating. He showed us how to use the keys, heating and power. He also had a printout of restaurant and bar recommendations, which my partner and I used to explore.
Location is perfect -- a short walk to most anything you would want or need. It was just my partner and I visiting, but it could definitely house 6 people comfortably, so if you have a group and don't want to stay in a hostel this is undoubtedly perfect for you.