They are really good books, and I really think Ты should read them. It's not like Twilight, which is еще for Pre-Teens and under I suppose. This one is a bit еще Young-Adult, with a bit of explicit language, and drama being it's main genre instead of romance. It has stuff like alcohol, and sex, though the scenes aren't all that explicit.
I myself like it еще then Twilight, but that's еще because it's my type of book. And I'm thirteen, so it's really up to Ты to decide.
Ты could read the first chapter on the Main House of Night Webpage and see how Ты like it;
link