All in all the place is as described and totally perfect for a few days of vacation in Venice.
Sara was always quick to answer, when there were any questions and generally really helpful. There were a few hiccups with the water at first, but Sara quickly solved the problem and was very apologetic so no problem there.
Personally I think the apartment is the right thing if you want to visit Venice for just a few days and intend to be on the move all the time. I would rent it again.