This drama is hard to describe in just one or two words, it mixes a lot of genres(soap opera, satire, melodrama, mystery). So I'll just list what it has to offer:
-A cast of colorful, dysfunctional, and likeable characters
-A satiric yet so true view on society, not just rich people
-A melodramatic story with lords and servants set in modern times
-A peacock
-Women changing dresses several times during episodes, always looking stunning
-Great acting and production value
-Sad and tense moments mixed with comic relief
-A good mystery that keeps you guessing
-LGBT representation and feminist message

If you like these things watch it and have fun like I did!

My favorite character was actually Min-su, partly for her clever personality, partly for amazing job from the actress who can make soo many facial expressions, some comic, some tragic, but you could always guess what she's thinking about and it was so great! I love that actress tbh(Park Sung-Yun).