I bought this for my daughter who is 23 months old, as she loves watching 'In the Night Garden' to get ready for bed.
I agree with some of the other comments that the book isn't really a book, more like a pamphlet, and that the lantern fades quickly. But, to be honest, I wouldn't really want the lantern to stay on longer.
The teddy is lovely and she now insists on cuddling him to get to sleep. We make a bit of a routine of getting her in her pyjamas at night time, and then getting iggle piggle ready for bed! I'm sure in months to come she will get the dexterity to get him ready for herself, but for the moment it's a useful aid to help get her off to sleep! (and me a bit of sanity!)