I really really love this drama! I find it a bit underrated, maybe it's because the drama's main focus isn't romance.
Even though I have watched this one 2 years ago, it's still one of my favourite dramas. I still listen to some of it's soundtrack, the songs are great. I remember I would wait for wednesdays for the new episodes, and that I would really laugh in almost every episode.
The ending was my favorite part, and all the actors (Ji Sung especially, of course) were great. I highly recommend it if you are looking for a light-hearted and fun drama to watch!