The 89 inside cabins are 128 square feet and have two lower beds that can convert to a queen. In addition there is a Pullman bed, so they can sleep up to four.
Norwegian Epic - Inside Cabin
Norwegian Epic (c) Linda Garrison
Like the other staterooms on the Norwegian Epic, the interior cabins have a split bathroom, with separate areas for the toilet, shower, and sink. The rounded walls and fixtures add to the interesting design.