My full review is here on my personal website. I'll post a few excerpts here, though:

4.5 out of 5.0 stars

The very worst thing about this book is that Aslan is the one to save the day. Eh, feels like cheating to me, but it doesn’t make the story any less awesome. :-D

The very best thing about this book is when they realize for certain that they are again in Narnia and several centuries into their Narnian future.