Stay overnight in a concrete sewer pipe on the banks of the River Danube.

 

The drainpipes are two meters in diameter and two and a half meters long, with a porthole to look out of, a front door to close and a cozy nest to snuggle into, which includes a low-slung futon, bedside lamp, woolly blanket and light sleeping bag.

 

It’s novel, it’s bold, and the best part is that you pay as much, or as little, as you want.