I just received an email from the Le Mimosa that they have decided to open again! This was by far our favorite restaurant in the Languedoc area and well worth the drive into the middle of nowhere to get there.
We stayed at the Le Hôtel du Mimosa and it was nice - not too expensive and a clean room with ok bed. It was maybe a bit far away from the restaurant after champagne and a bottle of wine between two, but only one of us had a digestif (the one not driving!).
Guess that means we need to plan a trip down south soon!