It's a funky apartment. It's midway between most of the buildings you'd be visiting in that part of Florence and the Train station. In that respect it's convenient, but do be prepared to walk quite a bit. We were planning on walking a lot anyway, but if you plan to visit the museums and churches and return to the apartment in between those sites, you'll be walking a lot. Room A is a kitchen with a queen sofa bed in a loft above it. Room B has a similar layout to Room A, but with another sofa bed down and a queen bed in the its loft. Between the two is an entry hallway, off of which is a bathroom and a set of stairs to another bed room with its own half bath. Rooms A and B have doors, but there is no door to the bedroom in the middle. All the stairs are steep and might be tough with kids or older people. Most of the beds are in common areas and as such there is little privacy in the apartment, which may or may not matter to you, but you should be aware of it. There is a motion detection light in the hallway as well, so any of the people from Rooms A or B using the bathroom at night lights up the hallway which is disruptive to the room above it which has no door. There is quite a bit of sound leakage between the street, parking lot behind the apartment, and the other apartments in the building. Fortunately it was mostly quiet at night.
There was only one set of keys on a locked keyring so they could not be separated. One of the keys needs to be plugged in to a socket inside the door to turn on electricity in the apartment (including wi-fi). If half your group wants to leave, the half that stays cannot use lights or Wi-Fi unless the key stays at the apartment, but then that group needs to stay there to let the others back in. This was a disappointment. It also made it difficult for our group to split into two without careful planning about when the group with the keys needed to be back at the apartment. Our AT&T International Pass plan on our cell phones got very limited reception in much of Florence, so staying in touch between groups was further complicated. That isn't Anna's fault at all, but it made the single key issue that much more apparent.
It's funny how that one thing affected our stay, but it really added an extra layer of complication. The apartment was clean and all the beds (sofa beds included) were comfortable. We did need to take a duvet from an unused bed to use on another which had no blanket on it.
I feel like I've only complained about the apartment, and I don't want to make it out to be worse than it was. We had a great time in Florence and the apartment was comfortable and convenient. Really the keys were the big hangup.