Recalled unsophisticated French spa town (5)
I believe the answer is:
evian
'french spa town' is the definition.
(Evian-les-Bains in France)
'recalled unsophisticated' is the wordplay.
'recalled' shows that the letters should be reversed in order.
'unsophisticated' becomes 'naive' (similar in meaning).
'naive' in reverse letter order is 'EVIAN'.
(Other definitions for evian that I've seen before include "spa town" , "This water" , "springwater" .)