The apartment comfortably fits 4, not 5.
Don't forget to read the house rules. The AC is set to only function for 9 out of the 24 hours in the day. There is only 1 AC unit in the entire house which needs to be checked because it does not work and is not strong enough to cool down even one room of the house when on. It doesn't blow cold air, it only blows air. It only functions during the the morning and day time and does not function at night when needed most. So of our three night stay, we woke up drenched in our sweat every morning. Sadly we couldn't leave to a hotel because every hotel was fully booked since there were three large events in Florence that weekend (we tried every night). She provides two fans which don't do much at all if you're traveling in the summer months when it gets very hot. Additionally, the entrance does not feel welcoming or safe. There was writing all over the big, broken wooden door. My kids were all very nervous and so was I. The apartment is in the first floor, however, it does require 15 steps to enter which may be an issue if you require wheelchair access or have a lot of suitcases. There is barely any natural light which enters the apartment and the two existing windows lead to a main road and a side alley on the first floor so the noise of the bars, cars, etc. are very loud and opening the back window allows for many bugs to enter. So we couldn't open a window for safety and comfort to air out the apartment when the A/C is off. Lastly, the "dryer" is a shared hanging rack with the neighbors, so I wouldn't consider this a "dryer."
This ruined our three day stay in Florence and I'm writing this so it hopefully doesn't ruin yours.