The apartment is as described. It has enough space for six people, and plenty for four. The sofa bed is not very comfortable, but manageable for a few nights. The other two beds are lovely and comfortable.
The location is great. It is close to lots of food, local markets, and the main streets of Florence. The apartment itself was very quiet and on the third floor. You do need to climb a few sets of stairs to get there. There is no lift.
In summer, the loft gets quite hot and doesn't cool down with the air conditioning.
The balcony is great, as was the portable clothes line which we put out on the balcony to dry our clothes. The kitchen is well stocked with cups, glasses and cutlery. There was also plenty of dishwashing liquid and washing powder which was nice.
Overall a great stay at the apartment!