I know I have shared about this little bookstore in Italy before, but I could have lived here. It is so obvious that the owner loves books. It doesn't matter what kind or how new or old, they just love books. If in Venice make sure you visit Libreria Acqua Alta and be enchanted by a place that is all about the books.
P.S. Yes that is a canal out the door. When I was there, the water was on the step.