This place is great! Yes, there are 117 stairs to climb and another 24 within the apartment, so if you can't do stairs, you should find another place. But we felt the stairs were totally worth it! The views are amazing! You can see the Duomo and the Palazzo Vecchio tower! It is in a great location--right across from Orsanmichele Church, minutes from the Palazzo Vecchio and Uffizi Gallery, and about a 5-10 minute walk from the Duomo. It was magical. In the evening there was a lovely cross-breeze (although the AC really helped cut the August heat) and there was nightly music in the streets that added to the charm and atmosphere of the place.
Gian Paolo met us at the apartment and showed us around. He gave some great suggestions (like an evening walk to Piazalle Michaelangelo for a sunset view of Florence). He also helped us figure out how to get to the airport for our early morning departure. The apartment had some listings of local places to eat and activities.
We loved our stay here, it's a great location, comfortable, charming--definitely recommend it and hope to stay there again some day!