The many positives:
Perfect location. Easy walk from the Piazzale Roma, and across from the train terminal.
Historic villa. Lots to learn about the Gradenigo family.
Near excellent restaurants, the historic Jewish ghetto and more.
Spacious rooms. You could plan a party for 100 in its parlor.
Alain, the owner's representative, is jovial and very helpful.

The drawback: it's past time for new beds. In one master bedroom, you sleep on what appears to be a hide-a-bed, with a rock hard mattress and springs poking through. And the twin bed mattresses are larger than their beds.

If the bed situation were addreesed, Gradenigo would be a great base from which to see Venice.