Are marble ones dream accommodation? (5)
I believe the answer is:
halls
If this is the answer, I'm afraid I cannot explain it.
Can you help me to learn more?
(Other definitions for halls that I've seen before include "'I dreamt I dwelt in marble . . . . .' (song)" , "Entrance passages" , "Lobbies" , "''I dreamt I dwelt in marble ...'' (The Bohemian Girl)" .)