Instead of an action-packed, blood&gore laden, shallow, visually unassuming Hollywood-flick, you get an almost sinisterly dark and incredibly beautiful piece of art. Don't watch the English version, it lacks the atmosphere of the German version, probably due to the German actors' inability to cope well with the English language. Everything is more fluent with the German and this translates into better acting overall. If your German isn't fluent, then watch it with the English subtitles on.
This movie attempts to capture the deeper currents of the Vampire myth, to get to the heart of the curse that is embodied in Dracula. Klaus Kinski is brilliant as Count Dracula and makes the movie all by himself. Which isn't easy, as the director is obviously set on translating the vampire myth into something as close to believable or "real" as possible.
The scenes are long and cumbersome in places, that is true. But this only serves to work the sinister and dark atmosphere into the viewer. If you immerse yourself, then the movie is a thrilling experience.