I will keep this short. I don't know why people didn't like the plot or the acting. For me, the plot was interesting and simple, it was nowhere near boring. This was not a complicated drama. It had everything- romance, comedy, fantasy, sadness, and friendship. It is a light drama with a good story.
This was my first time watching all the actors in this drama and I loved them! Everyone acted out their role perfectly. I especially loved, absolutely loved Shin Hu-ye (Lim Ju-Hwan) in this drama. His role and his acting were amazing.
I would suggest everyone to give it a try at least once. Everyone has their own preferences, but I think you might enjoy it!