Let by me guess, you've just scrolled through a dozen listings in Venice that all look the same, many run by corporations, most lacking any character. Allessandro's flat is about as far away from that as you can get. This place is as true to Venice as you can get. And Allessandro, born and raised in Venice is a truly gracious and friendly host with excellent recommendations. If you're lucky he might even pick you up in his boat.
The location is perfect. It opens up on the most quintessential Italian square situated beyond the reach of the average tourist, kids playing in the late afternoon, locals dining outside at the restaurants, and if you're there on the right evening the tango dancing starts.