In disgust, Rose rejected retiring in holiday locations (7)
I believe the answer is:
resorts
'holiday locations' is the definition.
'in disgust rose rejected retiring' is the wordplay.
'in' says the answer is hidden in the clue.
'retiring' is a reversal indicator.
'stroser' is hidden in the letters of 'disgust rose rejected'.
'stroser' backwards is 'RESORTS'.
'in' is the link.
(Other definitions for resorts that I've seen before include "Holiday destinations" , "Uses" , "Brings into play: getaway spots" , "Haunts" , "Blackpool and Brighton, say" .)