I thought the sets looked great with nice use of practical effects and old-fashioned stage sets. Actually everything looked fantastic. Margot Robbie and especially Ryan Gosling are very funny in this. The message about patriarchy, feminism and sexism is laid on pretty thick and while it is good to get this across it was not very subtle. It did provide some good jokes, for example when the Ken's are mansplaining.
I really dislike Will Ferrel and again he is the weakest link here. He and the executives of Mattel are so overly not funny and a stain on the film. All in all, an entertaining film and I can understand why people think highly of it.