I was also hesitant to start this because of Han Ji Hye but after 4 episodes I can say I really like this. The cast is good and even though the main story is kind of re-used, it has nice new little details that I'm enjoying. Music is also nice, not basic drama ost ballads.
Of course if 'falling in love with the person you're going to revenge' kind of plot isn't your cup of tea, you probably won't like this either.