If zelaron was a place, what would it look like?

I've never been there.

It would be a place in which Lenny would be restrained by some sort of mechanism.

I'd have to say a matrix type setting (like when they were in pods) with WW sucking all of our brains dry and yelling about bullshit posts resulting in bans. Fucking machines....

EDIT: Or a Nazi death camp with the propaganda banners up "Bullshit posts result in bans" Mein Feurer.