I would rate this as an average film. Not the best when it comes to horror and not the best when it comes to Vampire films, but what makes this an average film despite these shortcomings are some little touches relating to race, class and privilege which make this a better film than others.
If you are watching this film to be scared, do not bother, it is not scary at all. It is intriguing though as I did want to see what the mystery was and how the film unfolded. Despite not being frightening, it was engaging. I do not think that I would watch it again, but I am glad that I did watch it.