Outstanding Eastern European housing at college (6)
I believe the answer is:
superb
'outstanding' is the definition.
(thesaurus)
'eastern european housing at college' is the wordplay.
'eastern european' becomes 'serb' (I've seen this before).
'housing' indicates putting letters inside.
'at college' becomes 'up'.
'serb' enclosing 'up' is 'SUPERB'.
(Other definitions for superb that I've seen before include "Impressively splendid" , "Tiptop" , "fine" , "Dusty product of spider" , "Dazzling" .)