Have always had really positive experiences with Airbnb in the past, but unfortunately this wasn't one of them.
First things first, before booking my top 3 criteria for an apartment were - close to the centre, easily accessible for us (elderly parents, me with young child) and air conditioned given my mum is asthmatic and suffers quite a bit if it's too hold or indeed too cold.
The location is great, can't fault it. But on the other 2 not so much.
Despite the host promising that Loredana would be able to help us with our bags, on arrival she flat out refused stating a problem with her wrist. On checking with the host, she said that we didn't specify the bags would be so heavy - which she failed to qualify when saying we would have help. My 70 year old father and I had to carry the bags up the 15 or so flights of stairs. Had I known, frankly I would have never booked this place.
Second, the air conditioner just does not work adequately. This is my 3rd stay in Venice and each time there is a unit in the living room, but always sufficient to heat the apartment. In this case, the AC just wasn't enough to cool the apartment. We struggled to sleep all 3 nights, and on letting the host know - all she said was that the AC did not go below 18 degrees, but also claimed no one else had complained - despite another recent reviewer stating problems with the air conditioning. It also took the host over 24 hours to get back to me when contacted about the temp in the apartment.
The WiFi is intermittent at best, and the living room in the flat is tiny compared to how it appears in the pictures. All in all, wouldn't recommend.