In 2013 my husband and another couple cruised along the Danube to Budapest. We did have a small problem with the locks as the German Lock Keepers were on strike, but Viking altered the itinerary slightly so we did not miss out on any of the sight seeing tours, in fact they went out of there way to make sure we had the most wonderful holiday. We enjoyed the cruise so much we not only booked another cruise in May (wine tasting in Bordeaux) we have also booked a sea cruise with them starting in Istanbul in October. We can fully recommend Viking for a fabulous holiday and value for money.