This was written for one purpose-- to have fun with the genre and toss an American (played by an Aussie, but who's counting?) into a kdrama. Viki knows a good chunk of its viewers are not from Asia, and many of us are just boring white chicks enjoying an escape from our lives and exploring a new culture. This little drama capitalizes on that-- it's very smart. You'll see all of your favorite tropes here: piggyback rides, catching the tripping girl, saving the female lead, love at first sight, evil second leads, all of it, and it explores these things with JOY. It's fun, folks, it's popcorn. Watching with Viki comments (for the most part) contributed to this feeling of community and "Oh, no they went there!" while I watched. This is a girls night in your pajamas kind of show. 

The acting is not great, but this actually contributed to the feel that this is not a real kdrama but a kdrama about kdramas, promoting the "meta" feel I think they were going for. The story was written to be cliche, so you can't fault them for the unoriginal story line since that was kinda the point. I didn't notice the music, except when they were playing it up for the cliche moments. 

You just have to go into this knowing it's all about the tropes, it's for fun-- it's CANDY people, not a main course. If you have that attitude, you'll thoroughly enjoy it.