Sun is the most beautiful ship. Decorated in luxurious Scandinavian style, she absorbs people well. The cabins are nice, with a seating area and a small balcony (deluxe veranda level). Service is great, as is the food, generally, although it is sometimes difficult to get a table at dinner, especially when they have two shows on the same night. The included excursions are usually basic orientation coach or walking tours. The optional excursions are pricy, but the Flåm railway was amazing!. You can buy a drinks package which gives you all your drinks rather than the rather basic quality wines (also beer and soft drinks) with lunch and dinner. Bar prices are steep and subject to a service charge. We did the Viking Homelands cruise which covered the Baltic and some Norwegian Fjords. The day in Berlin (from Warnemünde) was not enjoyable. We were put on a scruffy old "ersatz" train for over two hours in each direction. No Aircon so you had to open the windows and the noise was terrible. Then a coach tour (sit on the right or you'll see nothing). They dropped us in Gendarmenplatz which was a long way from anywhere. Tourist attractions are mostly museums. When we got back, because we were the last people off the train (due to our carriage not actually stopping next to the platform) and being rather slow walkers, we were right at the back of a queue of some 700 people. It took nearly an hour to get everyone on board, by which time it was after 9pm and all the restaurants were full. This was pure bad organisation on the part of Viking, who made no concession to the large number of slow walkers - these guests could easily have been put in carriages nearer the other end of the train, minimising the walking distance. Unlike on the river cruises, there are no slow walking tours. I'm not sure why, when most of the tours have multiple groups.
Nicely decorated. Not as much storage as some ships and the wardrobe isn't easily accessible. Beds fairly comfortable but a bit hard . Nice bathrooms.