The characters mostly, especially Jamie. I will openly admit to the Jamie lust. And the fact that I felt it wasn't overly descriptive. I lose interest in things that are overly descriptive very very quickly. It's the whole reason Tolkein and I don't always get along. But this seemed to be descriptive without being wordy if that makes sense.

Outside of that, I'd have to go find my copy of the book and flip through it to pick out specific things that I liked.

I also accidentally read her fourth book first (my grandmother had bought it for me) so I totally related to Brianna (Jamie and Claire's daughter).