When deciding what things to take with you to your spa hotel, think comfort and functionality. Non-restrictive, casual clothing is an ideal choice. As well as bathrobes, most hotels supply slippers on arrival. However, if you're planning on taking a yoga class, pack some trainers. Hoping to reset and recharge in the hot tub or make use of the pool? A bathing suit is a must. While spending all day lounging around in next to nothing can be freeing, remember that there may be a minimum dress code for the restaurant if you're at a top-end resort. Bring something stylish to wear in your bag too — just in case.