When deciding what to take to your spa hotel, think practicality and comfort. Loungewear is ideal. As well as bathrobes, a lot of hotels supply slippers. However, if you're planning on going to exercise classes, pack your favorite trainers or sports shoes. Want to soak in the steaming hot tub or hit the sauna? A swimsuit is essential. While spending all day wearing next to nothing can feel liberating, bear in mind a restaurant dress code may apply if you're at a high-quality resort. Throw something smart to wear in your bag as well — just in case.