Director: Jess Franco
If the 1970's brought us anything in cinema, it was sexy vampires. I mean, there's no shortage before. Ask me about Brides of Dracula. But by the time we got to the 1970's, we had moved into a weird twilight zone of art film/ exploitation film/ horror film where nudity was rampant and sex was not just implied in knowing cut-aways.
As far as I know, of the Jess Franco movies, I'd only ever seen Vampyros Lesbos. And, somewhat (in)famously, Franco was one of the foremost purveyors of cheap, wandering "horror" films that bordered on a Cinemax late-night entry and what cable would play on weekends in the 1980's while also absolutely existing as in-no-way-scary horror films.
The movie is one of five directed by Franco in 1972 alone. Whatever the market was, it was quantity over quality, and I suspect few scenes were actually scripted or anyone really did much to prep for the movies after getting a set of fangs, a Dracula cape and a location. The movie uses a lot of 1970's film language, from racking focus into a scene (usually onto some natural object) and lots of lingering shots of people walking and not saying much.