Frequent hotel with relative (5)
I believe the answer is:
haunt
'frequent' is the definition.
(thesaurus)
'hotel with relative' is the wordplay.
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'with' means one lot of letters go next to another.
'relative' becomes 'aunt' (aunt is a kind of relative).
'h'+'aunt'='HAUNT'
(Other definitions for haunt that I've seen before include "Regularly visit" , "retreat" , "get spirits?" , "A favourite place" , "Visit in spectral form" .)