We came during the record breaking heat wave that struck Europe in June. When we arrived in Florence, the heat index was 111 F (44 C). The hosts had just turned on the AC (a ceiling unit in the living room, and a portable unit in the main bedroom) shortly before our arrival. It was quite warm, but after a few hours it became bearable with the fan pointing at the bed. But we went back out exploring after we set our luggage aside, so it is not as if we sat around being hot while waiting for things to cool down. No, we were walking around being hot. My daughter was excited to see the very cute second bedroom until we realized that there was no A/C there, so she was stuck sleeping with mom again.
But we were happy to have the AC that they provided, and were comfortable sleeping with the door shut and the fan on. Everything was just as pictured in the Airbnb app, and we were completely satisfied. Yes, the bathroom was VERY narrow but that was fine since other reviews had mentioned that. Since the AC didn't reach down there it was quite hot so we didn't linger anyway. The bidet was in the way for us--as clueless Americans, we weren't inclined to use it. I wish it had a lid or something, as the bathroom could have used more space.
The only other issue we had were the locks. There are three locks to get into the apartment: at the street, the gate, and the apartment--and all three gave us fits. But eventually, we always made it inside.