I watched 2nd Season few days ago to let me sometime to think about it and write constructive without any personal feelings. And I'm dissapointed. I have to set 1.5 , because the story was so boring. I don't really know why the distance between 1st and 2nd is so big, but I have information to the directors - pretty Song Kang is not enough. To be honest, the fact that I watched it until the end is due to my love for Kim So Hyun's work, which I am a fan of. If it were different actress, the show was be "dropped" after the first episode.
I also have problem with crying. They all the time crying and nothing more. In some scenes I thought to myself: "Wait, wait, wait, why are you crying? Are u not too touchy?".
But....it doesn't just have negative sides, scenery and music are very good, which really fit to the drama and characters. I also think the acting was nice. Hopefully we will get a third season which will be alternate and BETTER. If not, then my advice to the actors - don't do that shit anymore. It is a pity to waste your abilities.