I really think the people rating it so lowly just don't empathize with the characters. I truly saw myself in this show. While my life is not exactly like the characters in the show, the family dynamics were like looking at a mirror. I truly empathized a lot with the daughter, and it made me understand and view the perspectives of my own family members differently. There isn't heavy plot twists or exciting drama, it's just real. Don't expect this show to be any more than it is, and I think you'll enjoy it.
Its not a perfect drama, but I think it was an enjoyable watch all around for a family melodrama. The pacing is a bit slow sometimes, and the romance is a bit boring, but in a way it's more realistic because of that. There isn't petty conflict between the FL & ML added just to add drama, it really is just focused on the family dynamics and self-discovery of each of the characters.