Le Landeron Marina

Le Landeron's marina sits on the southern tip of Lake Biel/Bienne, one of the warmest lakes in Switzerland — so the water is actually inviting if you feel like a swim. The town itself is a short walk away, with a remarkably well-preserved medieval old town (Le Bourg) that most people drive straight past on the way to bigger spots. You've got the basics covered on-site: fresh water, showers, and pump-out services, plus the nearby Camping des Pêches if you need a place to stay.