This is an awkward one to rate, it's cheesy, has plot holes and little logic. Makjang enough that you know every episode will have a 'twist' and some tears.

And yet I thoroughly enjoyed it, the baddies were so bad the goodies were so good. I laughed at the humour both intentional and accidental, got angry where I should and teary where I should.

Still it isn't actually very good just... enjoyable. Props to Lee Yoo Ri for a large part of that enjoyment.

Well worth a look if you want something fun to watch. I skipped some of the first episode setup bits the broad picture was enough. The last couple of episodes are a bit the same skip the tying it up parts you guessed or don't really care about watch the bits you want.
The Music was what you would expect.
The cast are really what keeps you watching and they all do a solid job with what they are given. Go Na Hee is cute as a button which always helps.
I probably won't watch this again for years.

Edit: August 2021
So I lied!

I'm rewatching this at the mo' and revelling in it's trashy airport novel marvelousness! Such fun! I like the homage to Yoo Ri's Fun-staurant turn - he likes wine so...

I think part of the enjoyment for me is knowing Yoo Ri is as mad as toast IRL it lends a whole new shine to her character's vulnerable, Stepford Wife routine. When those big Puppy Dog eyes fill with tears or she does that blank eyed smile I'm totally convinced no matter how barmy the plot is.

The ML talking to everyone like they are moron's though is harder to handle. If I spoke to my 10yo like that I'd get short shrift.

Watch it - it's pants, but.. they are made of shiny purple velvet with yellow satin stars sewn on by hand.