Is anyone aware of simple, uncomplicated 3 or 4 day cruises on the Danube River beginning in Germany (Nurnberg or Passau) headed eastward and then returning?
My in laws go on river cruises in Germany every year and I'm not aware of any that are only a 3-4 day return excursion. There are many options for going from Passau east and back but they all are at least 6-7 days (Passau tourism webpage has good resources http://tourism.passau.de/PassausHighlights/DanubeRiverboatTrips/RiverCruises.aspx)
For something shorter you might find doing day trips from Regensburg a good option: http://schifffahrtklinger.de/de/
DJ
Thank you.