I know I'm very late in watching this drama but it's been on my list since it aired and I finally watched it. AND I LOVED IT!
It has a capturing start and without wasting time on background stories, the drama jumps right into the main plotline. It shows the imperfection of humans in such an amazing way. How greediness and selfishness comes to surface when you are put into such situations.
Yet the two main leads show us the true meaning of being selfless and living for others. The male lead is so gentle but good at his job ad the female lead show she cares about herself first but we find that she also puts herself last. Although mostly all of the residents are bad in one way or another, the main leads don't hold a grudge against them and help them and do their best for everyone until the end.
Even though this drama isn't focused on romance, I love the way main leads portray their love without any words. Also them being married makes everything ten times better in my opinion.
A lot of the scenes did have my at the edge of my seat. It wasn't exactly gory but it was enough to make you jump.
In the end I really thought that Yi Hyun died because I had not seen any spoilers thankfully. I couldn't have been any more happier for the happy ending.
One thing I really hoped to see was what happened to Han Tae Seok and his wife in the end. I understand showing the cure would stretch things too far but to see his ending would have been nice because I actually liked him.
Overall I enjoyed the drama and would recommend it 100%