Classic room (5)

I believe the answer is:

attic

I believe this is a double definition.

'classic' is the first definition.
(thesaurus)

'room' is the second definition.
(I've seen this before)

(Other definitions for attic that I've seen before include "top-flight accommodation" , "from Greece" , "Room inside a building's roof space" , "Athenian Greek" , "Classically elegant" .)

I've seen this clue in The Telegraph.

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