Not bad at all. There are some tense political scenes with Dany, Tyrion is having a tough time and is psychologically effected by book threes events (he isn't in book four), and we have Jon back working with Stannis, begrudgingly.
Melisandre having a few chapters is quite interesting too and I think shes a great new P.O.V.
I like Penny and her pig! She starts off as naturally quite angry and sad but develops into a sweet character that Tyrion bounces off well.
I'd say this was just as interesting as the last book, somewhat better pacing. Although, I do miss Cersei this time, as her, Dany and Tyrion are my favourite P.O.V. characters.
Can't wait to hear from Arya, Sansa and my girl Cersei again!