Antonio was extremely responsive and gladly met with us an hour before we were supposed to check-in. He offered to help with our luggage up the four flights of stairs. The apartment was beautiful and exactly as pictured. Clean, comfortable, and we even said we could see ourselves living there. The location next to the Uffizi Gallery and the Ponte Vecchio bridge was perfedtion. Antonio stayed in contact throughout our visit, and helped us find some purported Michelangelo graffiti nearby.
We could have used a second set of keys but we got by. My first shower was lukewarm, not because we were on the top floor, but because no one turned on the water heater over the bathroom door. Luckily we figured out the problem. The shower was small but that seems to be standard for Italy.
Don't hesitate to rent this place if you can handle all the stairs and the single set of keys.