Aral Tankstelle

Great, works even in winter. Don't insert euro coins into the Sanizuil dispenser, but go to the gas station and get a coin insert, 50 cents each for, I estimate, 50 liters. At first glance, the dispenser doesn't seem to work (the buttons are partially cracked open), but as soon as you insert a coin, a light comes on and the buttons work, provided you press gently.

Great spot, bring a 50-cent coin! You can get everything here: gray and black water, and fresh water!

A very decent and clean place to dispose of wastewater, clean the toilet, and fill your water tank (€0.50 for a token). You can even clean your campervan in the car wash, but unfortunately not on Sundays.