We are booked on the July 10th maiden voyage of the Oosterdam in the Baltics. I have heard that the Baltics are an excellent travel itinerary. I am looking forward to the cruise.
BUT... I might suggest the best cruise that I have ever experienced was the Rotterdam VI Transatlantic from Boston to Harwich via Canada, Greenland, Iceland, Orkney Islands, Faroe Islands, Amsterdam, and Edinburgh Scotland. I highly recommend this itinerary for a unique cruising experience.