City name that is encapsulating 'charming' primarily (4)
I believe the answer is:
nice
'city' is the definition.
(French city)
'name that is encapsulating charming primarily' is the wordplay.
'name' becomes 'n' (common abbreviation e.g. on forms).
'that is' becomes 'i.e.' (synonyms).
'encapsulating' is an insertion indicator (I've seen this in other clues).
'primarily' indicates taking the first letters.
The first letter of 'charming' is 'c'.
'ie' going around 'c' is 'ice'.
'n'+'ice'='NICE'
(Other definitions for nice that I've seen before include "French city - sounds plesant" , "place near Cagnes-sur-Mer" , "Leading resort on the French Riviera" , "Lovely" , "Agreeable - Riviera resort" .)