The apartment was in a great location for us personally as we were in Venice for a night and it was right by our stop from the water taxi. The downside is that it wasn't near the main areas but we didn't do much of that anyway.
There is not air conditioning which is a major issue especially in summer. It was impossible to sleep at night.
Wifi was fine and check in was super easy. Mario was great to communicate with but overall I wouldn't say in this airbnb again due to how hot it was.