I loved it, not my favorite one in the series, but it still retained whimsical childlike view. The only bad aprt about it was it started to get really dark and serious, but I guess it had to happen. I hated the ending, but I love the plot!
This is easily the best book in the Harry Potter series so far (I seriously doubt Deathly Hallows will measure up to this, but I suppose it's possible).