Hydrotherapy site (3)
I believe the answer is:
spa
'hydrotherapy site' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for spa that I've seen before include "here for the good of his health?" , "Bath, possibly" , "Watering-place" , "Health resort near a spring" , "A curative mineral spring, or place with one" .)