As you'll likely be spending a good deal of your time wearing only a robe and slippers, you won't need to take a lot. Besides casual, loose-fitting clothes to slip on after your massage and spa treatments, personal items such as toiletries and underwear should be on your packing list. Of course, if you plan to use the resort's swimming pool or engage in exercise sessions, throw a bathing suit and some gym gear into your bag too. Finally, leave the electronic devices behind and bring a good book instead. It is, after all, meant to be an escape from the real world.