Though I did not know the male lead, the camera is on his face, like, all the time and I am not complaining.

Lovely face acting by Park Seo Joon, which reminds me of Hyun Bin's talent (see Crash landing on you).

No subtle acting for the other main characters, on purpose obviously, we even get some farcical acting!

It is a sweet drama.
There is trauma but it won't be heavy on your soul (no triple deep trauma at the end, like one cute-looking drama I still resent! grrr).

An unbelievable situation or two, but no loopholes (I believe).

The music fits perfectly and I am listening to it with pleasure. Nam Hye-Seung also composed for "Crash landing on you" and "It's ok to not be okay" ?! my 2nd drama and the first soundtrack I looked for : so dark and atmospheric, so very different from this one! Kuddos to the star of drama soundtracks for her versatility.

A simple story and the characters are simple as well, so there's not much motivation to rewatch on my part. Now I want to watch Park Seo Joon's other dramas! hehe

Enjoy :)