Other reviewers have mentioned this already but while the drama is good, it suffers from being only around 15min per episode. I found myself at episode 6 thinking "Wait, how are they going to resolve all of this?".

I found the plot highly intriguing at first but given that there was so little time to develope everything accordingly, the ending left many questions unanwered (what happened to Han Ji Woos parents, what was that taped-up house, who is that english-speaking reporter and why does she care about our fateful pair etc.).

However, the worst part for me was, that by the end of the show, I could genuinely not tell you why those two people are in love. And not that there always needs to be a perfectly understandable reason - but I didn't even see hints of Han Ji Woo falling in love with Kang Seo Joon. While beautifully acted, the scene where we find out that he does, indeed, like Kang Seo Joon as well was quite a surprise for me personally. Like "oh he does? Really? Why?".
I think part of that is because until around episode 7 Kang Seo Joon comes across as quite an irritating character who tries to get out of problems by paying people off. The whole range of issues that came with his scandal weren't explored either and so the issues felt very insular.

The relationships between the characters weren't all that well developed in general - I couldn' tell why some people were friends, how they had met, etc.

All in all, the production was GREAT, they filmed outside a lot and so it never felt like it was just two sets that were being used. The kitchen at their house in particular was absolutely stunning.

I wish they'd had time to develope everything futher, the idea behind the plot is great but severely underdeveloped, as are several other key points of the production. It's sad because the acting performances were seriously great across the board. And while the main couple didn't necessarily have the best chemistry, they absolutely made it work and I could tell they were physically comfortable with each other.