Eight years ago when we were in Germany and I don’t remember seeing motorhome/campers on the road, but now they are everywhere. In Wurzberg, we spotted a car park for mobile homes. According to their website the parking spaces were 12 euro for 24 hours, fresh water was 1 euro for 100 liters and electricity was .60 euro a kWh. They also had grey water disposal free of charge.
We saw the Würzburg Residency, walked through Würzburg Court Garden, across the Old Main Bridge, (a medieval stone bridge with statues) and spotted the Marienberg Fortress on the bank of the Main River, before stopping for dinner at LoCanda Pizza.