This is a lovely place to stay! It is right around the corner from Palazzo Vecchio and the Piazza della Signoria. We loved being so near all the things we wanted to see, it was perfectly furnished and comfortable. There are two bathrooms, making it very comfortable for 5-6 grown people to share. The bathroom adjacent to the master bedroom was not very private, but I LOVED the shower set into a brick alcove. It was like a bathing in a medieval grotto.
A few things to consider. Being located in the middle of things meant more late-night noise than we were expecting, including a group of very loud, drunk men yelling at each other at 3am on our first night. The horse drawn carriages also clip-clop up and down the street outside until around midnight, and buskers set up just up the street every night until late. I did not mind this - the music was actually lovely - but if you're hoping for a quiet retreat from the hustle and bustle you might want to stay in a different neighborhood. Any rental in this area is going to have this issue.
Also, take the warnings about the stairs seriously. They are very long and steep, and will pose a challenge for anyone who struggles with their cardiovascular health. I don't think I would recommend this place for families with small children. Not only are the building's stairs steep and potentially dangerous for kids, there is also a very narrow, steep spiral stairway leading to the twin beds in the loft area. It was not possible to get our suitcase up those stairs to the loft, and its open railings at the top pose a falling hazard to any kids left unattended up there.