By the way, entrance fee is P 100.00 per head and you need to call the number (032) 4309250 and look for Esoy or Menein for a reservation because the place is small and they wont accommodate you specially if the place is already reserved or occupied.
I was able to talk to the caretaker and she said that Esoy Hot Spring is owned by a local town councilor Esoy Bustamante. Also, there are caves in the area that you can go to and a waterfall just a few meters away. You won't be able to see it from the pool though because of a big hill. Also, she said that since it is summer, the hot water spring coming out of the small cave is very slow, that is why the pool is not that hot anymore. But during other days, when the water flow is a bit faster, the temperature of the water inside the pool gets hotter and you could even see smoke from the pool because of the hot temperature of the water. You could also smell the strong scent of sulfur.
We will try to visit the place again soon when it's not El Niño anymore so that we can experience bathing there when the water is hotter and more relaxing. Hope you enjoy the scraps Ronald took.
View of the pool from above.
stairway to the pool