This appears as Han Gi-tak’s (Kim Soo-ro) restaurant in Come Back Mister/Please Come Back, Mister/Come Back, Ahjussi (돌아와요 아저씨) (SBS, 2016), first seen in episode 1 as the place where Kim Young-soo (Kim In-kwon) and Shin Da-hye (Kim Min-jung) celebrate their anniversary, with Gi-tak as the chef.
Tartine Bakery [타르틴베이커리서울] is located in the replace Hannam lifestyle complex — which consists of a museum, shops and restaurants — in Seoul’s neighborhood of Hannam [Hannam-dong/한남동] in the Yongsan district [Yongsan-gu/용산구]. The location featured in Come Back Mister was the European bistro Second Kitchen [세컨드키친], which moved to a new location within the Hannam neighborhood in 2018.
22 Hannam-daero 18-gil, Hannam-dong, Yongsan-gu, Seoul, South Korea
서울특별시 용산구 한남대로18길 22
(서울특별시 용산구 한남동 263-2)
Geolocation: 37.534412, 127.008527
Hannam Station [한남역], Gyeongui Jungang Line, Exit 1
(11 min walk)
— submitted by deanekitty29, additional information by Mich KDL