The movie starts out strange, with discordant music and jarring flashes of several scenes. Not a great beginning, but it picks up. The pace is really slooowwww, but it was made in 1983. Eons ago! The music turns classical and gets much better though I would have preferred more dialogue, since the movie relies a lot on pretty, artsy scenery and effects. Yes, the billowing silk is gorgeous and the love scenes with Catherine Deneuve and Susan Sarandon are really nice, but I would have liked a bit more storytelling.
The basic plot is about vampires who live forever, except not really. One of them is dying (no! not David Bowie! Take someone else!) and tries some pretty awful things to keep from going. Alas. He perishes and his lover turns her attention to the lovely Susan Sarandon. There's not much of a story but hey, it's an unusual, creepy movie with just enough sexy weirdness to make it watchable.
Netflix lists this flick as horror, vampires, erotic, thrillers, cult horror. I'd say that pretty well sums it up. On sale at Amazon, if you must own it.