I LOVE vampire movies, i've seen as many as i can get my grubby little hands on, and i really loved this one. This one has a very beautiful ambiguity that i really really love. At lot of these other reviews seemed to hate that, but in this adaptation you don't know of carmilla really a vampire, you just know something isn't right with her, and i loved that. It's still visually very beautifully gothic, but if you want candelabras and fangs on necks this isn't necessarily a traditional vampire flick.
In the original novel, lara doesn't reciprocate carmillas advances but this one is this very strange, romantic love story between the two of them that i think works much better than original antagonist carmilla.
There is a bit of gore in this one, it's mildly graphic, but i think it works really well especially in the context of the whole movie.