Wiktionary
bon viveur
n. One who enjoys the good things in life.
Wikipedia
Bon viveur
The phrase bon viveur is a pseudo-French phrase adopted in English in the mid 19th century, modelled on the French bon vivant "one who lives well", i.e. referring to a person who enjoys the good things of life.
The phrase is not derogatory but conveys a sense of overindulgence. In his book, Mind the Gaffe, professor Larry Trask advised that the phrase is pretentious.
Usage examples of "bon viveur".
His smile, between the bloated cheeks of a bon viveur, was satis.