For me, even with the 15 minutes length of every episode, they seem so long. The biggest problem with this show for me was that the main lead was so manipulator that Cha Yoon Seo should have run away as far as possible from him since the beginning. I really don't understand how she could  liked him.
On the other hand, there's no surprise for a k-drama. You have the 2nd male lead who is a nice guy, the witch-mother in law... almost every one of the stereotypes of this kind of drama, but at least, in a really short time.