I’m not feeling particularly critical at the moment – not such a good thing for writing a review, eh.
Nothing really leapt out at me as being particularly good or bad – generally I was happy enough to just sit back and enjoy the ride. The characters are explicitly spelt out as usual, but subtlety is probably a bit of a defect in this genre anyway. Bit of a dumb twist at the end (oh, someone we’d never met was pretending to be someone else we’d never met: just what comparison did we have to pick this deception?), but some enjoyable new elements: a larger world plot developing beyond Hogwarts or the Dursleys; and some flirtation with the early stages of puberty.