It was bit hard for me to finish the first episode, but when I got hang of it, it was really difficult to say goodbye.
I'd recommend that YOU watch it!
The only thing I did not like was too much smoking. Netflix have really infected the Korean shows as well. No one can deny the amount of bare skin they show, and almost every other character smoking. Overall, it was a decent show.
The ending was not tricky to get as each episode had bits of ending scenes. So safe to say, it was a happy ending for me.