Share possible feature of hotel (4)
I believe the answer is:
pool
I believe this is a double definition.
'share' is the first definition.
('to pool' can mean 'to share')
'possible feature of hotel' is the second definition.
(Other definitions for pool that I've seen before include "Small area of still water" , "stakes" , "Pond; table game" , "Small lake" , "game indoors" .)