At Antong's original hotel, the day-entry fee gives you access to private and sex-segregated indoor pools where you bathe naked plus various outdoor pools for which you need swimming wear plus a cap (NT$50 if you don't have your own). Conditions aren't luxurious and the outdoor area, while not unpleasant, is overlooked by rather drab hotel buildings and lacks views.

While you're here, ask to see the 1930s Japanese villa, an attractive wooden building which has been preserved (albeit somewhat half-heartedly) at the back of the hotel complex.