By the time you get to part two, of book three, you must know that you're an addict.
On reading the series (on my kindle) I'd missed this book. So there was a massive story hole by the time I got to book four. So much so I was disappointed that GRR had moved this to back story.
Not exactly the order I wanted to read the books in, but you can't undo reading a book, and I had to complete my knowledge. Given that, I LOVED this book. All of your favourite characters appear, and are plunged into even more impossible situations than ever before.
As with all his work, you can't put it down. You have to work hard to keep in mind all of the relationships. And the thrill ride is deliciously explicit.
The problem comes when you start seeing characters in your work colleagues, and asking yourself "what would Tyrion do?" :-)
If you're a fan - get it. Read it before watching the TV series.
If you're not a fan, hardly likely you'll be reading my review :-)