Not at all - as long as you're at least generally right. If you're grossly misrepresenting things that apply to one country as "common denominator of Europe" it

Not at all - as long as you're at least generally right. If you're grossly misrepresenting things that apply to one country as "common denominator of Europe" it's offensive. It's offensive to pretend all germans wear lederhosen or probably a couple of americans were annoyed if I'd say that all americans wear cowboy boots and hats, have a winchester on their back and a colt on their belt and speak the worst texan dialect ever.