This is another of the dwellings featured in Venice: Venetian domestic architecture by Egle Trincanato. It is described as ” a small palace with remains of 11th century work”. The “three part mullioned window was rebuilt in the 16th century, with capitals dating from the 13th or 14th century”.
There is no mention of the age worn carving you will notice in the photo of the archway, and the close-up shots.
What a wonderland I was privileged to enter.