Avoid like the plague. Go 2km to the summit for a much better view, better drink selection, and…read morevastly better and friendlier customer service.
The proprietor/manager of this place is almost a caricature to the surly, rude French business owner that basically disappeared (read: went bankrupt) after the EU was formed.
So, if you want access to ONE kind of dismal beer, and want to see old school French rudeness that got parodied in movies like National Lampoons European Vacation, by all means go here.
Otherwise, save your Euros and go to the summit.