Spa feature (5)
I believe the answer is:
sauna
'spa feature' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sauna that I've seen before include "Type of bath" , "A Scandinavian steam bath" , "Room for steam bath" , "Finnish-style bath" , "Scandinavian hot room for cleansing oneself" .)