It was better that many reviews indicate, IMHO.
This show is a lot of fun. There is plenty of humor from the main cast. It is pretty low on the trauma meter, which I like. I really enjoyed the show.
To address the somewhat over-the-top comedy of the FL, played by Hwang Jong-Eum. As I always note, this was the way the show was written and produced, and the actress interprets what she is given, I imagine. She did a masterful job which I guess is not at all easy. I really enjoyed her character and she made us laugh a lot. It may not be your cup of tea and that is fair enough.
Park Seo-Joon as the ML was great, as always, and incredibly good looking, too!
I'd like to call out Si Won Choi for pulling off being a total nutball, without being annoying or tiring. He was great and actually perhaps my favorite character in the series.
Ko Jun-Hee as Min Ha-Ri was absolutely great also. Her acting was very natural and compelling, and of course she is just incredibly beautiful. I wonder why she is not in more series as a lead? The friendship between Ha-Ri and Hey-Jin was a highlight of the series.
If you looking for a nice mix of humor and romance, this is it.
Why just an 8 if I enjoyed it so much?
I think the leads were really good together, but they were just a tad lower in chemistry than some other Kdrama couples, even given their respective (screen) personalities. The chemistry in the later part of the series grew as the personality of the ML was more relaxed and natural. His "stiffer" personality in the early part of the series seemed less natural.
The additional cast beyond the four main characters were a bit underdeveloped.
I have thoughts on how the secondary leads turned out, which I was a bit disappointed in, but I don't want to include any spoilers by getting specific.
Mild Spoiler, I guess?? There was a nice, happy ending that lasted for more than an episode, which I appreciate.