While coming from Paris, Lyons, Mâcon or Geneva : Freeway A40, take the Oyonnax-Nantua A404 direction, then take the exit 9 - Montréal la Cluse-Nantua.
After the circle take the departemental road  D979 so, has 1,5 kms about you arrive at the
Lac'Hôtel.

Establish, online, your french road itinerary with www.iti.fr

Good way !!!