The world’s biggest cruise ships often have more than 15 decks so passengers have a lot of choice when it comes to selecting their cabin.

But if they want a good night’s sleep, they might want to carefully consider their choice, according to a sleep expert.

Rebecca Swain, sleep and mattress expert at Winstons Beds, said: “The biggest thing when choosing your room is the right location.”

Guests can usually access deck plans on their cruise line’s website, so it’s worth checking where…