Yes, lots of good reviews, if you like xmas movie. No need to tell all the good parts. Just watch it yourself.

Here keypoints that you should consider:
Good story?
Checked. Yeah, classic xmas story with easy to understand and predictable.

Good casts?
Checked. Yeah, handsome and pretty casts, from old to young.

Good music?
Checked. Of course, good movie must have good ost too.

For me, personally, this movie (Korean version) is like a variation of Love Actually (2003, Hugh Grant), even it has extended version too. The best xmas movie up to this day.