You're referring to the K-Drama "Hotel Del Luna"!

Here's a brief summary of the first episode:

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The drama premiered on June 13, 2019, and the first episode sets the tone for the entire series. The story revolves around Gu Chan-hyuk (played by Yeo Jin-goo), a young and ambitious manager who is assigned to work at the Hotel Del Luna, a luxurious hotel that caters to the ghosts of the deceased.

Upon his arrival at the hotel, he's introduced to the quirky staff, including Jang Man-wol, who's a ghost with a strong personality. The episode then follows Gu Chan-hyuk as he navigates the hotel's unique operations and meets his first ghostly client.

Throughout the episode, we see glimpses of the hotel's inner workings, including the interactions between the living and the dead. The tone is set as a mix of mystery, romance, and comedy, which becomes a hallmark of the series.