Overall, I would say this drama is pretty amazing. The best thing for me was the cast. I enjoyed Lee Min Ho as cold but sweet Choi Young . Kim Hee Sun nailed her character. I usually only watch for the male leads but this is my 2nd drama of kim hee sun and she didnt disappoint me at all! I enjoyed her flustered and quirky character. They had incredible chemistry as well.
I would say the story is pretty well written too. I liked the fact that their is no love triangle and that the 2nd couple (king and queen) were pretty adorable as well. I liked the happy ending since I was worried it was going to end in a tragedy but it didn't.
I would rewatch it since I love happy but not forced endings. A great historical drama!