Like the vibes at a spa (6)
I believe the answer is:
serene
(Other definitions for serene that I've seen before include "still" , "Calm and relaxed" , "Calm, peaceful, tranquil" , "Calm and composed" , "Impassive" .)
I believe the answer is:
serene
(Other definitions for serene that I've seen before include "still" , "Calm and relaxed" , "Calm, peaceful, tranquil" , "Calm and composed" , "Impassive" .)