We sailed on the Viking Sky in early December 2010 from Budapest, Hungary to Passau, Germany. We visited Hungary, Slovakia, Austria and Germany in one week, all with the ease and comfort of waking up in a new city/country and having the hard work done for us. No pulling baggage into the tiny European elevators and lugging baggage to trains, planes or taxis. The Sky includes travel excursions as part of your purchase price. It is a small ship so you really get to know your fellow passengers and crew. We are still in touch with friends from this cruise and we are all wanting to get together for another cruise on Viking or visiting at our homes.
We went a few weeks before Christmas and though it was cold and snowy it was also enchanting. We visited Christmas Markets all along the Danube and they were spectacular.
Please feel free to visit my blog and view my photos from the cities we visited. http://americanhomestead.blogspot.com Just look in the archives for early December of 2010.
Looking forward to traveling on Viking again...