This laundry appears as the laundry run by Yoo Ji-ho’s (Jung Hae-in) parents in One Spring Night (봄밤) (MBC, 2019) — as seen, for instance, in episode 11 (full episode 6).
Pyeongchangsa Laundry or Pyeongchangsa Setak [평창사 세탁] is located in Seoul’s neighborhood Pyeongchang [Pyeongchang-dong/평창동], in the Jongno District [Jongno-gu/종로구]. It sits just vis-à-vis Café Motte [카페모뜨].
21 Pyeongchang 30-gil, Jongno-gu, Seoul, South Korea
서울특별시 종로구 평창30길 21
Geolocation: 37.652150, 127.014334
Hongje Station [홍제역], Seoul Subway Line 3, Exit 1
Prepare for quite a walk or take a taxi.
— submitted by Marion KDL