Had sailed on Riviera, Marina's sister ship, last September in the Mediterranean. This cruise, which began in Copenhagen and visited Warnemunde, Germany (Berlin); Gdansk, Poland; Tallinn,Estonia; St. Petersburg, Russia; Helsinki, Finland; and Stockholm, Sweden, appealed to us for its fascinating itinerary, and we knew from our previous experience that the ship would be superb.
Although this is not within anyone's control, the weather was unbelievably beautiful every day - clear and sunny, calm seas. A total joy.
About us and our expectations: we are not party cruisers, in fact, would hate a ship with that emphasis. We love reading, music, quiet reflection and conversation on the balcony, exercise walks around the deck, rejuvenating spa treatments, full-out touring during the day and a good meal and restful evening to prepare for the next day. We enjoy meeting friendly like-minded people who are mature and cultured. We didn't care about the casino or the lounge (though we did love listening to the charming and talented Romantica String Quartet from Belarus most evenings in the Grand Bar).
Pluses: near the rear of the ship, our cabin easily accessed the aft Terrace Restaurant. Minuses: maybe a bit more engine noise than a midship cabin, and far from the concierge lounge. But a quiet location. The soundproofing between cabins seems to be very good.