This place is a find. It is on a canal near many tourist spots, but a quiet one without many tourists. The apartment itself has windows with lovely views on two or three interior gardens and is quiet, with a lot of light. The host, Maria, was lovely and helpful. Her family has been in the building for ~200 years.
For visiting the Biennale it is a very convenient, walkable spot.
I would very happily stay there again.