Continuity mistake: After Joe sneaks at Mary's drawings, he starts to hug her. As of then, her hairstyle differs between the wide and close angles.
Continuity mistake: When Joe and Barbara are chatting by the table, the bottle of wine keeps turning around.
Continuity mistake: Joe dives into the sea with people around. When the angle changes, the people disappear.
Continuity mistake: The first night in Genova Mary cries and her father comes to hug her. Her hair keeps swapping back and forth from sweaty and stuck to the forehead to loose.