I really liked all the things related with the Fae: the Realm, the war, the politics. It was the most enjoyable part. However, I'm not a big fan of Mackenzie. She lets people manipulate her too much and sometimes she's so, well, stupid. In some chapters I wish I could shake her! Although the first person narrative is fun.
Also, I didn't like the love triangle, I think it's so...boring. But Aren is awesome! I'll probably continue to read the series.