We've stayed at this Stellplatz in Germany several times. A lot of focus is on French Aires, but this is an example of a top drawer German version, with a short walk into the historic town centre.
If your German is not too good here is a typical cost per night/facility:
Reserved pitch 18E
Non-reserved pitch 15E
Electric 0.5E for 1KWH
80l water 1E
Waste disposal free
Wifi free
Shower for 4 minutes 1E
Washing machine 3E
Dryer 3E
So for us using the basic facilities the cost is 18E/night. And its top drawer ...
https://www.stade-tourismus.de/de/zu-ga ... hnmobilist
If only communities here would adopt even a watered down version of Stade .................