I had it on Netflix Spain and I was on holidays in my country, so, these are the reasons why I started to watch this drama. I wasn't convince of the model Reply, and I had started the first chapter twice before decided to continue it.
 I liked the story, it's ok, and although sometimes it's previsible, I liked the idea of not knowing with whom the female lead was going to end.
What I didn't like so much was the female lead and her behaviour as a 3 years old kid. It seemed to over exagerated. At least, it was better after the 4 or 5 first episodes.
 I liked the end and the surprises that the story holds (for example, that the female lead had a sister, the doctor future wife and they encounter for the first time...)
 It you have time (and Netflix helps too), and you want to see a realistic drama, and to have nostalgia of the 90s (as it was for me), this is your drama.