Cleaners collect award for bar's accommodation (8)
I believe the answer is:
chambers
'bar's accommodation' is the definition.
(rooms used by lawyers, members of the bar)
'cleaners collect award' is the wordplay.
'cleaners' becomes 'chars' (char or charwoman is a term for cleaner).
'collect' means one lot of letters goes inside another.
'award' becomes 'mbe' (Member of the British Empire).
'chars' placed around 'mbe' is 'CHAMBERS'.
'for' acts as a link.
(Other definitions for chambers that I've seen before include "A judge's rooms" , "Set of rooms as for judge" , "Judge's room - dictionary" , "houses" , "Judge's room for hearing cases in private" .)