Björholmens Marina (Björholmens Marina AB)

Tucked into the rugged Tjörn coastline, Björholmens Marina has around 250 slips for boats up to 5 metres wide, with showers, restrooms, and laundry on site. You can grab a meal and sleep to the sound of waves at the hotel right on the water, where every room faces the sea — and there's even a sauna literally a metre from the shoreline. It's the kind of place you arrive for one night and end up staying three.