We stayed at Alberto's for a month and found it very comfortable and suitable for us as a couple. The location is in a quiet part of Venice yet only 15 mins pleasant walk to the centre. There are pleanty of local shops and resturants in the area. It is 2 mins walk to the "bus" (vaporetto boat) station which will take you just about any where in Venice or around the Lagoon.
Alberto and his wife Caterina were helpfull, friendly and answered our questions quickly. We will stay at this appartment again if and when we visit Venice in the future.