I've cycled past it and you shouldn't have any trouble from the D50 at the southern edge of the site - good tarmac wide single track road. Approach from the D46 just south of the bridge at the northern approach to the site and it is a narrow single dirt farm track.
------------- Ollie
2016
Monplaisir - Provence
Camping Les Gorges du Loup
Yes we have stayed there, see reviews on here. You should not have any problems with access, we didnt and our van is 7.48mtrs. Its a nice site in a good location.
We've stayed there too, and I'd agree that you shouldn't have any real problems. Like a lot of French sites access is down a 'lane' but thousands of caravans of all sizes will get here every year. Just take it slowly and allow yourselves plenty of time. Don't rush and you'll be fine!
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