Based on their professional marketing chose this company over Riviera River Cruises.
Over all a well managed if slightly, over the top, super organised company.
Booked additional tours on Viking web site prior to cruise and found I'd been charged for using my credit card, without being advised of this on the payment page. After a couple of telephone calls to Viking, they agreed to refund the cc charge back to my card, as clearly this was an error on their part.
Good use of space, plenty of storage and power shower excellent. Worth getting a deck 3 cabin higher up the ship.