Loved it, this series hits a sweet spot between 80's nostalgia, supernatural, horror, humour & kids adventure. Bit overacted by Winona Rider, and there's some suspension of disbelief involved, but that's par for the course. Good fun and engaging storyline.
After reading the book and thoroughly enjoying it, I was looking forward to the TV adaptation. Unfortunately it's had the soul ripped from it, and a light, clever, and funny story has been totally rewritten into some kind of tryhard drama. I guess that's what happens when you 'mericanise a quaint British story (though written by an Australian). In summary, don't bother. Just read the book and pretend the TV series doesn't exist. You'll be much happier.