Thanks to sulkytofu's review, I was prepared for what to expect. I recommend reading their review first and then reading mine as I do make a few distinctions.

I enjoyed this drama! The beginning episodes were hard to get through at first (I'd say ep1-6) but after that, the main leads really start to latch onto me and their romance start to build a lot more. The female main lead did feel a little annoying at first, but--again--after the 6th episode, I really liked her. (The male main lead also felt a bit stiff to me at first but after the 6th episode, I liked him too.)
This isn't a show that's jam-packed with drama, plot twists, etc., thus, why I called it a "low-key" drama. It's fun to watch and nice to watch when you have time or are just looking for a drama that's not going to pull any weird/strange twists. (In fact, I think it gets quite intriguing in the middle of the series! I binge-watched a lot of those eps.)
I also enjoyed the soundtrack a lot! I've one back to listened to it several times and can hum a couple of the tunes. It was pretty catchy and the scenes it played over was memorable.

My biggest letdowns from this show were just 2 things:
1) the secondary pairing's relationship is super cute but towards the end of the series, they don't get a lot of screen time. It's a shame as I enjoyed them very much & would've loved a whole lot more of them, especially from the girl.
2) some characters' endings felt a bit...too easy (as if the plot didn't know what to do with them, so the characters were dealt with in a kind of cheap way, I'd say. But again, I liked the low-keyness of the drama and am glad the overall series wasn't too short nor too long.)

Overall, the drama was enjoyable! Not the greatest, not the worst, just a fun drama to watch. The OST is really good and I've found myself listening to it a lot.