Making it short: 
 Cliche: daughter of the leader of the rebellion is captured by the vampires ruling the world and bought by the mysterious, handsome, immortal prince who everybody fears for some reason but only shows kindness to her. 
 Insta-love (lust?): they don't even reach castle and she already fawns over him 
 Inconsistent heroine: one moment she would rather die than become a blood slave, the next she says she doesn't have a death wish. One minute she says it is unbearable to think what Max might be going through... then she doesn't mention him for chapters... (view spoiler)[ she is physically abused by her maid to the point of breaking a rib, and gets mad at him for firing her (hide spoiler)] 
 Love triangle: Although it is not developed you smell it from the 3rd page. 
 Guilty pleasure: Why I couldn't put it down, I don't know... it is one of those books you don't know what made you continue reading it. 
 The ending is promising; Braith's new temper might make him more interesting, but still reeks of love triangle all over. I'll continue to the next one, maybe it'll get better...