Royal Caribbean's Quantum class ships, including Anthem of the Seas, are best known for their innovative use of technology, but there are new cabin categories on these ships, too. This 575-square-foot setup ingeniously combines three cabins: a junior suite, an ocean view with balcony, and an inside studio. They all share a vestibule, so that you can close the entrance to the hallway but keep your cabin doors open, giving it the feeling of one sprawling suite. There's room for eight to 10 guests. Bonus: You get three bathrooms.