An unpretentious, brightly lit fish house near the harbor works hard to satisfy Hamburg’s unquenchable appetite for seafood, serving the freshest catch in many variations. To get a taste of some local favorites, start with smoked eel and move on to cod, served with potatoes and mustard sauce—but there’s plenty else on the large, ever-changing menu. Nothing that comes out of the kitchen is trendy or haute, service is of the no-nonsense school, and there’s nothing stylish, cozy, or otherwise notable about the modern surroundings, but fresh ingredients deftly prepared make this a surefire hit with piscivores.