Han Se-Joo (Yoo Ah-In) and Jeon Seol (Lim Soo-Jung) eat here in episode 5 of Chicago Typewriter (시카고 타자기) (tvN, 2017).
Shinseon Seolleongtang Itaewon [신선설농탕 이태원본점] is located in Hannam-dong [한남동], Yongsan-gu [용산구], Seoul. Located on the ground floor with its entry on the right, it shares its building with Si-Wha-Dam Grill [시화담 그릴]. So you might want to come very, very hungry.
서울 용산구 이태원로 254
Geolocation: 37.537212, 127.001143
Hangangjin Station [한강진역], Seoul Subway Line 6, Exit 3
(Just walk straight and it will be at your left hand side.)
— submitted by Marion KDL