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4. If luxury floats your boat, it has to be Crystal Cruises.
Crystal Serenity has the only spa at sea created using the principles of Feng Shui - the ancient Chinese art of arranging rooms to allow Qi to flow - which makes it a pretty peaceful place to hang out as therapists coddle and cosset you, and add to the sense of calm.
5. Cruising NCL-style is all about being casual, with no one to tell you what to do or what to wear, but not when it comes to the spa, where the order of the day is to lie back and relax while masseurs rub, polish and pat your chosen parts with firm hands or hot stones so you emerge feeling like a new person.

Getting There:
Grab these great 2 for 1 deals on Mediterranean cruises with Costa - now available for summer 2010!