If you like Korean Joseon period drama plus romance/comedy this is not bad. The costumes and sets are good. The romance, comedy and acting is pretty good too. However, it is all very drawn out with lots of recaps, flash-backs and slow-motion moping scenes. Whether you can enjoy it or not depends on whether you like the romance and comedy or if you need the plot to make sense.
Underneath it all is a surprisingly serious plot arc with courtly conspiracy and bad guys who are willing to murder anyone who gets in their way. The first 20 minutes is pretty intense with lots of fighting and drama. This is what first hooked me actually. This conspiracy drives the whole story and offers up an excuse for the "sassy" princess behaviour. However, it would be more honest to just say she is just spoiled and impulsive and that is mostly what you get for the first half until the serious arc starts to resurface. The good guy characters are designed around romance/comedy and are not really plausible protagonists for the serious plot side which just takes random turns all the way to the end. It never really makes sense what either the good guys or bad guys are able to do or not do and why the other side doesn't see through their schemes until they suddenly do.