Luxurious, without hotel's advantage (4)
I believe the answer is:
plus
'advantage' is the definition.
(a plus is an advantage or benefit)
'luxurious without hotel's' is the wordplay.
'luxurious' becomes 'plush' (I've seen this before).
'without' suggests deleting specific letters.
'hotel' becomes 'h' (phonetic alphabet).
'plush' with 'h' removed is 'PLUS'.
(Other definitions for plus that I've seen before include "Positive - addition" , "Together with; advantage" , "asset" , "Coupled with" , "In addition, also" .)