At Nieuwe Willemshaven 4a, the red funnel announces itself before you reach the door. It sits on rails at the harbour's edge — a full-scale industrial sand funnel, painted signal-red, facing the Wadden Sea. The object is startling. Then you learn it's your room for the night.

The funnel dates from the early twentieth century, when it loaded sand, shells and grain from ships working Harlingen's busy port. It retired around 2004 and sat quietly on the quay until Marcel and Linda Bambach reimagined it in 2018. They kept the structure intact and built a one-bedroom luxury suite inside, turning port machinery into something closer to a cocoon.

Inside, the aesthetic is warm harbour-chic. Metal softens into wood, curves recall the funnel's original purpose, and the lighting is generous enough to flatter a windblown arrival. A plush two-person box-spring bed anchors the sleeping space. The bathroom offers a double sink and a rain shower. A sofa nook with a minibar and a flat-screen handles quieter evenings.

The centrepiece, though, is the private Jacuzzi — positioned to face the water. The UNESCO-listed Wadden Sea stretches out in front of it, and the tides perform twice daily without any effort on your part. Mudflats appear and disappear, gulls work the shallows, and on a clear day Terschelling and Vlieland sit on the horizon. Sunset turns the masts and cranes a warm copper. The soak you planned for twenty minutes will run considerably longer.

Harlingen itself rewards a short wander. The compact centre holds canal houses, working waterfront, and the kind of bakeries that make leaving feel rude. The harbour is active and genuine — historic vessels share the quay with the occasional cruise ship, and the Willem Barentsz replica nods to the town's seafaring past. The ferry terminal is a short walk away and connects to Terschelling and Vlieland, which makes a day trip to the islands straightforward if the horizon tempts you.

Summer brings warm Frisian countryside weather — ideal for the open-air Jacuzzi and cycling along the waterfront. Spring and autumn offer milder, quieter days with the landscapes at their most photogenic. Winter draws guests looking for a cosy harbour retreat; the interior earns its keep in the colder months, and the quieter port has its own appeal.

Nightly rates sit in the premium range — roughly €350 to €450 depending on season and availability — which reflects the rarity of the experience as much as the comfort. The stay has earned Traveler Review Awards, and reviews consistently highlight the welcome, the cleanliness and the singular pleasure of sleeping inside a piece of working harbour history.

Harlingen Haven train station, served by train line RS2, sits approximately 170 metres from the funnel — the most practical arrival point for guests coming from outside the region. The Havenplein bus stop is about 235 metres away and serves bus lines 71, 97, 99 and 197. The Harlingen ferry terminal, roughly 390 metres distant, connects to Terschelling and Vlieland by ferry — a useful detail if island-hopping is part of your plan.