Do Bong-soon (Park Bo-young) and Ahn Min-hyuk (Park Hyung-sik) walk here on their date in episode 11 of Strong Woman Do Bong Soon (2017).
This place is located in Hongdae [홍대], Seoul.
If you walk up from Sangsu Station to Hongik University, you will pass by here. It is just before you’d need to turn left to go to Hongdae Playground.
Adress: 서울 마포구 서교동 406
Geolocation: 37.552359, 126.923721
To get here: Sangsu Station [상수역], Exit 1 or 2; Hongik University Station [홍대입구역]“>Hongik University Station [홍대입구역], Line 2, Exit 9