French resort entertaining English family member (5)
I believe the answer is:
niece
'family member' is the definition.
(I've seen this before)
'french resort entertaining english' is the wordplay.
'french resort' becomes 'nice' (French coastal resort).
'entertaining' indicates putting letters inside (inviting in, as for dinner).
'english' becomes 'E' (abbreviation).
'nice' placed around 'e' is 'NIECE'.
(Other definitions for niece that I've seen before include "A younger female relative" , "Kinswoman" , "A sibling's daughter" , "member of different generation" , "Brother's girl" .)