Stylishly luxurious (4)
I believe the answer is:
posh
'stylishly luxurious' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for posh that I've seen before include "Swanky" , "Elegantly luxurious" , "'Upper class, accent perhaps (4)'" , "Smart, fashionable" , "U" .)