Before reading, all I knew about Rumpelstiltskin was that he was a dude who could spin straw into gold. I loved Rumple in Once Upon A Time but I didn't know the folk tale; which is why I'm very glad that the author started the book by giving us a brief introduction to the original story. And I loved the way she told it, by pointing out all the ways in which the story was ridiculous and implausible (in a good way).
I can't say for sure that everyone will appreciate this particular brand of humour (I read a review by someone who found it offensive) but I liked it. Because the truth is, the story doesn't entirely make sense and I don't think the author was trying to criticize or insult that. More like she was just pointing out that we love these stories because of how quirky they are. It was also her way of giving us a little precursor to the rest of the book, and telling us that it shouldn't be taken seriously and that it's just good fun.
After the introduction, there are six different version of Rumpelstiltskin's story. And I have to praise the author for how different all the stories are, not just in plot, but also in tone and which characters were features to what degree. Some stories are pure entertainment (like the first one) while others are more heartfelt. Some have Rumpelstiltskin as a protagonist, others as an antagonist. Some are from his perceptive while one is even from the perspective of the king.
Still, I wouldn't recommend reading all six stories in one sitting. There are a couple of tropes that are features one too many times. Also, the stories are just more enjoyable individually.
Overall, this was a great compilation. Not only am I now familiar with Rumpelstiltskin's story, but I also know a bunch of different versions of it. I love retellings and I think the author did a wonderful job with these. I loved her style of storytelling and especially her humour. In fact, I'm currently reading her Cloaked in Red which, you guess it, features stories about Little Red Riding Hood.