I caught this on the UK free-to-view London Live Channel-I assume it cost them just a few Euros to purchase.
It wasn't till I read the reviews here that I realised that the director is Rollin; they've just finished a season of his vampire flicks so presumably this was in the package.
What a load of crap! Us Brits like to denigrate the 1970s run of awful Brit. Soft core movies that blushingly concentrated more on "comedy" than eroticism. We always rather admired the French for a certain stylishness, and-almost always-their soft core entries during that era were pretty damn erotic even if the acting was only so-so and, of course, the dubbing (in ghastly American) was laughable.
But hey-with this movie-us Brits can hold up our heads again. This is just about the worst French entry in that genre that I've ever seen.
Others here have detailed all the horrors (no pun intended) so all I'll add is that I quite liked the brunette (in all her glory); her blonde pal didn't appeal, but..one man's meat is another's poison!
Avoid, unless you enjoy a masochistic laugh...