The premise of the show, the actors' activity level, and script, all make it seem like it should be a light and sprightly show, a pleasant watch for a weekend. But, somehow, it is not. I am not skilled enough in analyzing the components of shows to be able to point out the exact reason. It SHOULD all work, but -- to me, at least -- it does not.
One thing that keeps coming up in kdramas is the completely unrealistic portrayal of workplaces. I know, I know -- no one watches them for the workplace.