From what I learnd in school (some decades ago ) French addresses (normaly) are like German addresses: street, streetnumber, zip-code, city-name (only in different orders). If this schema doesn’t fit there are multiple addr:* tags you might find usefull (e.g. addr:hamlet). Also if nothing fits there is the addr:full tag.
In my opinion the current tagging addr:street=Les Mousse is wrong.