If you're looking for a quiet, uncrowded beach in Donghae, Daejin Beach is a great choice. It's not a flashy tourist spot, but that's exactly what makes it special. The sand is clean, the waves are gentle, and there’s a relaxed, almost local feel to the area. When I visited, there were a few surfers and families, but it never felt busy or loud. It's the kind of place where you can just sit and listen to the waves, go for a long walk, or read a book without distractions.