4 reasons why this K-drama is a hit:
1- It’s a breath of fresh air! With so many heavily plotted K-dramas out there ( revenge, injustice, melodramas, to much violence & action), it’s nice to have something lighthearted, with a good balance of drama to watch.
2- The cast is amazing! Even with some hiccups in the writing, they still manage to shine.
3- The plot is naive, simple, delightful, and oh so charming! It’s like a warm hug on a cold day.
4- And let’s not forget the queen herself, Uhm Jung Hwa! She’s simply amazing.

My review:
Story: smooth 9/10
writing: 6/10 could've been better
Plot: classic, naive
Acting: Entertaining
Casting: 10/10
OST: meh !! The drama had a lot going for it, but one area where it fell short for me was the OST. None of the songs really resonated with me or left a lasting impression after the show.