Holiday in an alcove (6)
I believe the answer is:
recess
I believe this is a double definition.
'holiday' is the first definition.
(thesaurus)
'an alcove' is the second definition.
(thesaurus)
'in' acts as a link.
(Other definitions for recess that I've seen before include "Breaktime" , "Find niche" , "secluded spot" , "Adjourn, rise" , "bay" .)