I liked this book very much when I was a child. I suppose the children-against-adults theme is very appealing when you're nine or ten. I still like the book and enjoy the descriptions and the inevitably happy ending, but I find myself liking it less than The Secret Garden.
The main character, Sara Crewe, is a little less contrary and a lot more perfect than the protagonist in the Secret Garden, and for that reason wasn't as endearing. I find myself preferring imperfect main characters, but I still love the book.