The apartment itself is fine - it’s pretty clean and in a good location, and you should be spending your time in Venice outdoors anyway. However the apartment is part of a group of 2 that share the same front door and the vestibule reeks of cloudy cigarette smoke from the neighbor, who is making strange noises at all hours making it a bit uncomfortable. The towels were also not properly washed. As long as you know these things in advance, you can still decide to stay there - everything else was as expected