The 8-day Vienna Vibe cruise from U by Uniworld is a superb selection (Observe the cruise line is on hiatus right until 2023). This cruise line was at first constructed to cater to millennials, and this itinerary incorporates excursions just like a walking tour of Vienna and biking around Passau. https://singles-cruise00998.thenerdsblog.com/22789824/singles-cruise-no-further-a-mystery