The Pleasure Masters: Kikko & Lil (1974)

Pleasure Masters is two unconnected stories, the first is about a guy with a Japanese housemaid and his girlfriend (who sucks lollipops and has shaved pubes). The second story is set in San Francisco in 1890, a coach drawn by horse is lost in the fog. The male occupants all end up in a brothel and have a wild time. The next morning they learn that is had burned down many years ago and all the occupants were killed in the fire.