Giovanna's place is wonderfully placed, very close to the Rialto and literally next to two restaurants that appeared in my guidebook. The flat has some books on Venice, and Giovanna gives you tips on where to visit, including going to the top of the department store by the Rialto for a view (be sure to book ahead online so you can make sure you get in -- it's free but it gets full). Giovanna was very friendly and approachable as well.