Area of market found by hotel in French resort (5)
I believe the answer is:
niche
'area of market' is the definition.
(as in a niche in the market)
'hotel in french resort' is the wordplay.
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'in' indicates putting letters inside.
'french resort' becomes 'nice' (I've seen this before).
'h' placed into 'nice' is 'NICHE'.
'found by' acts as a link.
(Other definitions for niche that I've seen before include "good spot!" , "Specialised corner of the market" , "Suitable position or small alcove" , "Suitable slot" , "Nook or recess" .)