Does this drama have quite a few cliches? Yes.
But ask yourself this, why are cliches used so often? Because they are appealing on some level to the general audience.
And that makes this drama deliciously cliche. Does it have a cliche love triangle with an oblivious female lead? Yes. But it's done well, and it's enjoyable to watch. And I'd make the same argument for the other cliches as well.
It won't be a show to philosophosize about or consider the greater impacts of politics on society or solve who murdered someone else, but sometimes you don't need all that. You just want a light hearted show to take you away from the dull reality of your own life or the problems you are facing. And in that situation, I'd say this is pretty perfect.