There is a great range in terms of size, style and luxury, but the facilities should be more elaborate and extensive than the average day spa. Ideally it will have hydrotherapy tubs, wet rooms, saunas and some unusual treatments. Expect a wide selection of exercise and stress reduction classes, as well as outdoor activities. It should have gyms for working out, swimming pools, and sometime tennis courts. Healthy spa cuisine is generally included in the price. While some treatments are included, you will probably want additional services. Some destination spas allow non-guests to book services on a day use basis. Others are limited to guests.