I did that, going West and only one way, but taking in a few more twisties, going from Lausanne to Gérardmer via Basel.
Admittedly it was on my Ducati, not a push-iron, but what a fantastic ride. The damp cobbles on the hairpins gave me some hairy moments and when I got to my hotel I was in severe need of a beer.
So after a shower went in search of the bar, which turned out to be non existent because the hotel was next to a church, and no alcohol can be served within 100 meters of a church in Gérardmer...
Happily it was a nice evening so wandered down the road a bit and found a couple of other bikers in a nice bar and got pleasantly pissed on Chimay.
Have a great day!