It's been such a joy to watch this. There is no unnecessary drama, no tragedy, nothing too scandalous. It's just the story of how two people fell in love with each other.
I appreciate that all the characters have some depth to them. The story is very simple, but still enjoyable.

What I think is the biggest flaw is that it's too short. I felt disappointed everytime an episode ended, because I fully immersed myself in the story. It's like when your parents bring you to an amusement park and you would stay there all day long, but time flies by and when you start having the most fun, you already need to go home.
On the other hand I understand that this wasn't meant to be longer than it already is. There are some things they could have explored further, but they don't add nothing to the main love story.

It would be a good watch for when you're spending a day out and you have two hours to waste. Also the OST is so cool.