October 2015 - Viking Kvasir to Europe
This was our first Viking cruise (previously used Avalon) and our groupof 16 was delighted with the service, crew, ports, and food. Rooms, as usual on a river boat cruise, are very small but you shouldn't spend that much time in them anyway.
Many of the tours guides will probably go into more detail about the sites than you want, so do not be concerned about going out on your own.
We rented a car in Strassbourg with another couple and did a fantastic wine tour on our own.
We'd go again.