Absolutely charming. Nesbit's warm, talk-directly-to-the-reader style is beautiful in a calm sort of way, filling everything with wonder. The characters are lovable (if perhaps unrealistically good and kind). The adventures are delightful (if a bit too reliant on coincidence). The atmosphere is easy to imagine, thanks to the clear and engaging writing.
I loved it. Hightly recommended for anyone who wants a gentle, wholesome, life-affirming read.
And if you like this, try Nesbit's Book of Dragons.
FREE for Kindle on Amazon: The Railway Children