The size of an Interior stateroom on a Carnival cruise ship depends on which ship you’re sailing on and which category of Interior cabin you choose, but you expect a room that’s between 155 and 185 square feet. How Big is an Interior Room on Carnival Cruise? Most of Carnival Cruise Line’s Interior rooms do follow that rule, but they class some of their rooms that have an ocean view as being Interior, due to the limited view you actually get. The reason I say that they normally are on the inside of the ship and they don’t have windows is that Carnival does things a little differently… They’re normally the cheapest and smallest rooms on board and can sleep anywhere from 2 to 5 guests, depending on the cruise line. Should You Book An Interior Room on a Carnival Cruise?Īn Interior stateroom on a cruise ship is one that is normally located on the inside of a ship away from the sides and does not have any windows.The 9 Different Types of Interior Rooms.How many beds are in an Interior Room on Carnival?.How big is an Interior Room on Carnival Cruise?.