Firstly, I really love the story and the ideas put forth by the drama - time travel, whether one man or woman can change the whole course of history, the merits of ancient times and lack of technology as opposed to the merits of the modern world and our abundance, etc. Initially, I was sceptical of the Kim Hee Sun-Lee Min Ho pairing - among the usual concerns are the age gap - but it grew on me and I like the mature way the romance was played out, probably helped by the writing (no unnecessary noble idiocy and a very forthright couple in this show). Thankfully the show isn't just driven by the KHS-LMH romance, but also by other relationships, which I particularly liked - the relationship between the king and queen, between the king and LMH's character, and the camaraderie & brotherhood amongst the Woodalchi. There are moments of comedy in this show - the transition KHS's character makes from 2012 Seoul to 14th century Goryeo, and all the modern language and habits she brings with her. At times the villains are hilarious. Several scenes were poorly executed - weird transitions from scene to scene, music not being used properly to add to the mood of a scene, not enough grandeur given to action scenes etc. I felt that the story was only adequate for a 20 or 22 episode long drama - 24 episodes felt way too long and I gradually got bored towards the end because several conflicts and threats by the villains were recycled and I was just pleading with them to act on their threats so I could see some plot movement happening. Thankfully the ending was good, but it sure took the drama WAY too long to reach that point. This had the potential to be a great show, but unfortunately it is just a good show.