Zenobio Palace is a fascinating and impressive structure that has housed some of the area's most important people. Allow time to see it for yourself.
You'll be spoiled for sightseeing choice in Dorsoduro. Zenobio Palace is a good place to begin here, but there are loads of other fine spots to experience. Rialto Bridge, St. Mark's Basilica, and St. Mark's Square are not far from the historic stately house and and will cap off your day nicely.