I watched this drama because it's widely considered a kdrama classic. It has all the elements you see in later dramas but in their most cliched form.
The plot runs in a perpetual circle and gets more and more ridiculous as you go along. Memory loss, chaebols, controlling mothers, kidnappings, makeovers and second lead syndrome - this is like the mother of all kdramas. It gave birth to the rest.

I can't say that I liked it and I certainly wouldn't want to watch it again. But for some reason I don't dislike it and even want to recommend it. I have no idea why.
At 25 episodes it's a bit of a marathon so pace yourself.