Paolo and Chiara’s apartment Is as described and is all that it should be. Spacious, quiet, comfortable, walking distance to all the main sights and close to the vaporetto. But note that if you have really heavy luggage you need to be able to carry them up two floors.
Campo St.Alvise is a wonderful location to stay in Venice. It has many cafes and Osteria close by for great food as well as a handy supermarket. And as noted easy walking to all of Venice. Or just catch the Vaporetto and enjoy the bay and canals by boat.