The cruise was advertised as the Romantic Danube. It was neither.
First, we were anticipating enjoying the Danube River. Only one day was devoted to cruising the Danube. All other days were spent in port, because the cruising was done at night while it was both dark and/or we were sleeping. We didn't see much of the Blue Danube. We had booked the rear stateroom at a higher price so we could have a 180 degree view or the river and its shorelines. What we got was a 180 degree view of ports, which after several hours becomes rather boring. Some days we sat aboard the ship for five hours with nothing to do.
Second, romance includes at least intimate dinners with one's spouse. The tour advertised open seating for dining. The picture we had was choosing to be by ourselves. Well, first, there were no two person tables. The smallest number was sic persons. The dining room seated 180, the number of people on the cruise. No separate seating when every seat is occupied. (By the way, I have a solution to this, in case Viking is interested.)