I'll try to make this short.

It had SO much potential and I don't say this lightly. It really did. The first half was amazing, new and very intriguing! But during the middle something happened and it became really slow and had so little progress in each episode. I just continued because of my attachment to the characters and for that part in me that knows that the story is actually pretty good and I want to know how it'd end.
Honestly If I could I'd remove 4-5 episodes from the middle that had so little affect on the story and felt repetitive and useless.

The ending is good but a lot of questions weren't answered and you're left with a number of loose ends.

I won't go into details because it would take forever.

The acting was great! Everyone was made for their role and did it exceptionally well! The chemistry between the main leads (and every other couple really) was also perfect and both of these things made up for the plot drag.

To summarize: it's good! If you're looking for something perfect this isn't for you but if you're looking for a romantic cute drama with good chemistry and don't mind about the plot holes this would be perfect for you!