I was about thirty pages in when I read the reviews on the back dust cover and wasn't expecting to see one by P.L. Travers. I had assumed the book was written in the seventies or eighties but no, it was 1965 and the author of Mary Poppins must have worked at the New York Time Book Review at the time. She loved it too.
It has only "decorations" (by Maurice Sendak) rather than illustrations so the beauty is almost all in the story and language (and actually, the hardback cover. See below.)
But its a beauty that will lend a lovely glow to any bedtime. For ages four to adult.