I would like to note that we were upgraded to a different flat at Via dell' Oriuolo, 1, 50122 Firenze FI, Italy. It was a fabulous upgrade. The location was just a few minutes from the Duomo and in a convenient location to public transportation, restaurants and attractions.
We had a one bedroom, one bath with kitchen and living area on the fourth floor (technically 5th by US rules). The apartment had a great updated decor, was cozy and super clean. The kitchen was large for downtown Florence standards. The bathroom was updated and large enough my wife and I could get ready at the same time.
The laundry was a washer dryer combo located in the apartment and it worked like a charm. Since we were traveling light we were looking for places with laundry so we could travel with smaller suitcase but always have clean clothes.
The apartment does have an old elevator.
Overall, we had a great time in Florence and the apartment just made it that much more special.