In Venice, a salizada is a street that was paved when the others were still good old dirt or mud, depending on the climatic conditions of the day.
Salizada San Samuele is found close to two vaporetto stops: San Samuele and Sant Angelo.
When I walked down Crosera Calle Botteghe, where you’ll find excellent restaurants, bars, a patisserie/small grocery store and a good wine shop, among other things, I would notice this arch between two buildings, at the intersection of the two passageways.
And, to the right of the arch, this stemma/coat of arms. It seems the insignia has been removed. I read that this sometimes happened when ownership of a property changed. The Vianello family probably wouldn’t want to live with the coat of arms of the Gasparini displayed on their home, for example!