# Iced flat white and iced choco at a Seongsu basement café: T Coffee - By Dohui (https://superchart.com/en/@lamplit-street-eats/) - Written Sep 14, 2026 - Local places › Cafés › Seongdong, Seoul - Sponsored: This post was written as part of a sponsored store visit. - English edition: https://superchart.com/en/@lamplit-street-eats/seongsu-t-coffee-color-table-flat-white/ - Also in: [한국어](https://superchart.com/ko/@lamplit-street-eats/seongsu-t-coffee-color-table-flat-white/index.md) ## In short T Coffee is a basement café in Seongsu, Seoul, on the B1 floor of a building at 159 Achasan-ro. Seated at one of the bright colorful tables between the wood-tone furniture and the silver coffee bar, I ordered an iced flat white for 6,200 won and an iced choco for 7,300 won. With outlets next to most seats, T Coffee is a place I would happily come back to alone with a laptop. ## Good to know - **Location**: B1, 159 Achasan-ro, Seongdong-gu, Seoul - **Hours**: Weekdays 09:00–20:00, weekends 11:00–20:00 - **Parking**: Not available - **Iced flat white**: 6,200 won - **Iced choco**: 7,300 won - **Desserts**: Sand cookies, pistachio cream puff, carrot cake, cheesecake - **Seating**: Window bench seats, two-person wood tables, colorful tables / outlets by most seats - **Price reference**: ₩6,200 ≈ $4.6 · ₩7,300 ≈ $5.4 (2026-09-15) *as written by the visitor on Sep 14, 2026* Hi, this is Meokbo :) This time I visited T Coffee in Seongsu. It looked clean even from outside, the door was pretty, and so many little corners of the space matched my taste that I ended up taking photos everywhere haha ## Where is T Coffee in Seongsu, and what are its hours? ![Exterior of the building where T Coffee is located in Seongsu](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-01-1p4wn-900.webp) *T Coffee exterior* ![T Coffee signboard](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-02-ufsdw-900.webp) *T Coffee signboard* T Coffee, this Seongsu café, is on the basement floor B1 of the building. - T Coffee / B1, 159 Achasan-ro, Seongdong-gu, Seoul - Weekdays 09:00 - 20:00 - Weekends 11:00 - 20:00 Parking isn't available, so if you're planning to drive, keep that in mind. ![B1 T Coffee signboard in front of the building](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-03-cs7a2-900.webp) The signboard in front of the building also marks T Coffee on B1, so just check it and head down. ## First impression: a basement space that looks good from the door ![Stairs leading down to the basement floor](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-04-z1mrt-900.webp) Following the stairs down like this brings you to T Coffee. The way down was so clean overall that I kept snapping photos even before seeing the café itself haha ![Entrance door of T Coffee](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-05-1l7fb-900.webp) And I couldn't just walk past the door either haha. Even small details like this caught my eye. ## Design details inside T Coffee ![Wide interior view of T Coffee](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-06-1iblv-900.webp) Once inside, the space opens up wider than expected. Wood-tone furniture, a brick-feel floor, and a silver coffee bar together made it clean but not too plain. ![Interior with wood furniture and brick-feel flooring](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-07-54c6h-900.webp) There was also a long bench seat running along the window. Since you could see lush green plants outside, it didn't feel stuffy even though it's a basement café. ![Window bench seating with plants visible outside](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-08-tjnvy-900.webp) ![Long bench seats along the window](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-09-1mk6y-900.webp) Inside there were also two-person wood tables. They felt different from the window seats, so there was fun in choosing where to sit haha ## The bright colorful tables that steal the show ![Bright colorful table seating inside the café](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-10-6x71l-1200.webp) But the moment I walked in, this bright colorful table caught my eye the most haha. The overall tone is calm with wood and white, so the vivid color in the middle really became a standout point haha. We ended up sitting there too. ![Small interior decor points around the café](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-11-t77lu-900.webp) And T Coffee wasn't pretty in just one spot — there were little points of interest everywhere. It wasn't decorated flashily, but there was fun in noticing these details. ## Outlets by the seats: is T Coffee good for laptop work? And one thing I really liked! There were outlets scattered around the seats. If you're looking for a café in Seongsu to bring your laptop or need somewhere for a quick work session, this is worth keeping in mind haha ## The silver coffee bar and how it fits the room ![Silver-toned coffee bar in the middle of the store](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-12-jljja-900.webp) ![Silver coffee bar and surrounding wood furniture](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-13-17aen-900.webp) In the middle of the store is a large silver-toned coffee bar. Having silver material mixed in among the wood furniture made this another standout point. The staff were friendly too, so even as a first-time visitor I could look around comfortably haha ## T Coffee menu and prices ![T Coffee's drink menu board](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-14-1di58-900.webp) The menu had all kinds of drinks, from americano to latte, flat white, and choco. We chose an iced flat white for ₩6,200 and an iced choco for ₩7,300. I picked the flat white and my other half picked the choco haha ![Desserts displayed in the showcase](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-15-1k2fw-900.webp) And on one side, desserts were laid out too — sand cookie, pistachio cream puff, carrot cake, cheesecake. Seemed like a great option to pair a dessert with your coffee haha ![Sand cookies and other desserts on display](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-16-115h0-900.webp) ![Pistachio cream puff and cake on display](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-17-1nt3x-900.webp) ![Carrot cake and cheesecake on display](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-18-108pb-900.webp) We had a lunch appointment that day so we just kept it simple with drinks, but if you're looking for something to pair with your coffee, it's worth browsing. ## Iced flat white for me, iced choco for my partner ![Two drinks placed on the colorful table](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-19-19lkd-900.webp) And here come the two drinks! Placing the flat white and choco together on the bright table, the color contrast made for pretty photos. ![A cup of iced flat white](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-20-16dh5-900.webp) My iced flat white! ![Iced choco and iced flat white together](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-21-45clm-900.webp) With so many standout points around the space, it was fun to carry the drinks around and take photos here and there. My other half's iced choco! (Suddenly such a cute drink choice haha) ## Is T Coffee in Seongsu worth a visit? ![Wide shot of the T Coffee store](https://img.superchart.com/images/seongsu-t-coffee-color-table-flat-white/seongsu-t-coffee-color-table-flat-white-22-setmu-900.webp) T Coffee was a Seongsu café whose space stayed in my memory for a long time. The atmosphere flowed naturally from the entrance all the way inside, and there were picture-like points of interest everywhere, making it fun to look around and take photos haha And I really loved that outlets were scattered throughout the seats. When looking for cafés in Seongsu, there are places that feel awkward to stay in with a laptop, but here, with outlets everywhere, it looked comfortable to bring one. Next time I want to come alone and work, or read a book haha (solo freedom, woohoo!!) If you're looking for a café with outlets or a good spot to work in Seongsu, T Coffee is worth checking out :) ## Where it is - T Coffee (티 커피) - 159 Achasan-ro, B1, Seongdong-gu, Seoul, South Korea - 서울특별시 성동구 아차산로 159 지하1층 - 37.5433996, 127.0618187 - Google Maps: https://www.google.com/maps/search/%ED%8B%B0%20%EC%BB%A4%ED%94%BC/@37.5433996,127.0618187,17z --- Superchart · https://superchart.com/en/@lamplit-street-eats/seongsu-t-coffee-color-table-flat-white/ · https://superchart.com/llms.txt