I am not a fan of European orders, but I must admit that navigation in ports and sea stations, and service on the Tallinn-Stockholm ferry are at a very high level.
An ordinary train station. There is a lot of space, but there is nowhere to sit down. There is a cafe, quite passable, and again there is a lot of space. You can have a snack, drink coffee and something stronger, ice cream. Buy souvenirs. This is the seaport.