We found the Viking Mars (which, as I understand, is the same as all their ships) to be comfortable, spacious, and well appointed. With the Thermal Spa, Wintergarden and ample places to hang out we enjoyed sea days in a way we never did before. The staff was friendly, the service was very good. The the ship quickly becomes your floating home away from home.
This is not a cruise if you are into lively music and blockbuster shows. The entertainers we did have were quite adequate, mostly low key. The exception was the duo in the nightclub bar (Torshavn) - they were as good as we've seen at any high-end big hotel nightclub in New York or San Francisco.
If we have any criticism, it's that Viking included shore excursions need to be better sorted by mobility. There are always multiple transports for these, but they put the very-low-mobility guests on the tsame tour with average-or-above capabilities. That caused a lot of tension (we witnessed a mobile octogenarian yelling at a limited mobility sixty-something because she kept telling the guide to go slower and slower while we were walking in blistering sun). Also, loading of all the tours is rather cramped and chaotic - here they could learn something from HAL, who does a much better job of managing the loading of excursion transport.
We didn't know what to expect of an adults-only, smaller-ship, all-inclusive cruise line for a long voyage. It's quite a bit more expensive. In the end we found it to exceed our expectations, and to be worth what we paid. We have already booked another 30+ day adventure with Viking!
