Put up again outside hotel - anger misplaced (6)
I believe the answer is:
rehang
'put up again' is the definition.
(I've seen this in another clue)
'outside hotel anger misplaced' is the wordplay.
'outside' indicates putting letters inside.
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'misplaced' indicates an anagram.
'anger' anagrammed gives 'reang'.
'h' going into 'reang' is 'REHANG'.
(Other definitions for rehang that I've seen before include "Give further showing of picture" , "Put up once more" , "Move of pictures in a gallery" , "demonstrate initial failure of capital punishment?" , "Suspend once more" .)