Well, it wasn't horrible, excuse the pun. But the final chapter wasn't close to the calibre of the first two parts, unfortunately. (I'm actually rewatching the first two parts as I write this because they were SO good.)
I watched all three parts with my daughter and when the final credits came up she said "That's it? That makes it not even worth watching." I think that's a little harsh, but you get the sentiment.
I'm glad I watched, for several reasons, and I'd still recommend it, but just go in knowing the yummy-blog-goodness isn't quite as long-lasting as it should be.