Charlie goes to the hotel, possibly, to dress (6)
I believe the answer is:
clothe
'to dress' is the definition.
(to be dressed in something is to be clothed in it)
'charlie goes to the hotel possibly' is the wordplay.
'charlie' becomes 'C' (phonetic alphabet).
'goes to' says to put letters next to each other.
'possibly' indicates anagramming the letters.
'hotel' anagrammed gives 'lothe'.
'c'+'lothe'='CLOTHE'
(Other definitions for clothe that I've seen before include "Fit out with garments" , "Put garments onto" , "Dress (someone)" , "apparel" , "Provide with garments" .)