It's a historical Korean Drama that I'm watching avidly right now. It has 54 episodes out so far and I think they're ending it around 70. And I know, 50+ episodes seems kind of daunting and I had second thoughts about watching it at first. But! my parents were watching it so eventually I got hooked!
It takes place during the Joseon dynasty and it's about a girl that rises up from being a water maid to become the mother of the future king of Joseon. It's got a mixture of comedy, romance, and of course drama
So if you've got time, be sure to check it out!