Although the Ilmatar was built as a two-class ship, she had only one dining room that was used by both classes. Other facilities included a first-class smoking room, located one deck higher from the dining room. As built she had six passenger-accessible decks. The 1973 lengthening saw the addition of several new cabins, a children's playroom and a new waste processing plant. More cabins were added during a 1974 refit at the Valmet shipyard in Vuosaari. In the 1979 conversion into a cruise ship more luxurious cabins were added and a swimming pool was constructed on the rear deck.
