Style over substance, sorry to say.
Tom Hiddlestone and Tilda Swinton look like the hippest vampires ever, and there is that sense of ennui which must exist when you have been around for 600 or so years.
But the thing is, there are huge chunks of the film where nothing really happens. I get life (or being un-dead) is generally like that, but I go to the cinema to get away from it, not watch it for 90 minutes.
So this did not live up to expectations.