Im Gasthaus Zum Scharfen Hirschen, as this softcore version is called, exists in a hardcore version called « Zimmermädchen machen es gern » and, according to imdb, most scenes were shot twice, to the point that two actresses switch their roles (one of them presumably refusing to do a part requiring hardcore scenes).
I don’t speak German but this is a typical sexy comedy of the 70s, set in an inn where every member of the staff (and a pretty cat-burglar) is ready to please the guests whenever and however they want. Lots (and I mean lots!) of nudity and softcore sex, including several lesbian and group scenes. I rest my case.