The Promenade Interior Suite on Allure of the Seas comes with two twin beds that convert to a king-size bed, a private bathroom and a sitting area.

One of Royal Caribbean’s largest cruise ships, Allure of the Seas, is getting ready to welcome passengers on board in Europe this summer with a major $100 million (£77 million) revamp.

Price, of course, also factors in. Many people prefer balconies but will downgrade if that means getting the ship they want.