Rostock, Marina Hohe Düne

Marina Hohe Düne holds the title of Germany's first 5-star marina on the Baltic Sea, sitting right at the mouth of the Warnow river where it meets the open water near Warnemünde. You're steps away from a white sand beach and the upscale Yachthafenresidenz hotel, so going ashore here means proper restaurants, a spa, and comfortable rooms if you fancy a night off the boat. It's a cut above the average stopover — expect well-maintained facilities and a resort-level atmosphere that's rare at a working marina.