# Weekend seats at a quiet basement café in Seongsu: T Coffee - By Nayul (https://superchart.com/en/@tiled-coffee-cup/) - Written Sep 8, 2026 - Local places › Cafés › Seongdong, Seoul - Sponsored: This post was written after the writer received a complimentary visit from the venue. - English edition: https://superchart.com/en/@tiled-coffee-cup/seongsu-weekend-cafe-oolong-tea-biscuit/ - Also in: [한국어](https://superchart.com/ko/@tiled-coffee-cup/seongsu-weekend-cafe-oolong-tea-biscuit/index.md) ## In short T Coffee is a dessert café in a basement space five minutes' walk from Seongsu Station in Seongdong, Seoul. Even on a weekend, seats were available, and the writer enjoyed pot-brewed oolong tea with a biscuit and pistachio cream puff, plus outlets for laptop work. A solid pick for anyone wanting to sit quietly and enjoy dessert in Seongsu. ## Good to know - **Hours**: Weekdays 9:00–20:00 / Weekends 11:00–20:00 - **Location**: 5-minute walk from Seongsu Station, basement level - **Ordered**: Oolong tea, biscuit, pistachio cream puff - **Seating**: Spacious interior with varied seating, outlets below tables - **Restroom**: Shared with the pizza-by-the-slice shop next door - **Service**: Food brought to your table; leave dishes behind when you go *as written by the visitor on Sep 8, 2026* ![Cover photo of T Coffee in Seongsu](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-01-d4v2e-1200.webp) ## I found a café in Seongsu that still had seats on the weekend You know how in Seongsu on weekends literally every café is completely full of seats... but this time I found an amazing café that actually had some seats and wasn't too loud, even on a weekend!! It's called "T Coffee." Weekdays 9:00–20:00 / Weekends 11:00–20:00 ## T Coffee's location and entrance (5 minutes from Seongsu Station) ![Exterior of the Seongsu-dong building where T Coffee is located](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-02-189em-900.webp) ![Entrance leading down to the basement T Coffee](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-03-k9vev-900.webp) T Coffee is about a 5-minute walk from Seongsu Station, tucked in the basement of a really pretty building. The entrance was decorated so cutely too. If you walk from Seongsu Station, you'll actually run into a pizza-by-the-slice shop before T Coffee — but that shop is connected to it, so don't worry and just go on in. ## The interior is spacious, and there are outlets too ![Spacious basement seating area at T Coffee](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-04-1hrd0-900.webp) ![A variety of café table styles](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-05-1ypvr-900.webp) ![A seat with outlets, good for laptop work](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-06-ydei6-900.webp) ![Inner space connected to the pizza-by-the-slice shop](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-07-1ne2p-900.webp) The interior was pretty big and open, with a variety of seating types, and there were outlets underneath, so a fair number of people were there with laptops working. There was also an inner space that I thought was another part of the café, but it turned out to be the pizza-by-the-slice shop right next door. The restroom is also shared with the pizza slice shop, so you just walk over and use theirs. ## The menu and dessert display ![T Coffee's drink menu board](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-08-8347v-900.webp) ![Cute stickers by the register](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-09-i70ce-900.webp) There were stickers by the register too, and they were so cute that everyone seemed to grab one, haha. ![Desserts displayed in the showcase](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-10-1f9nf-900.webp) ![Display of in-house-made desserts](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-11-6m5gy-900.webp) ![True-to-size dessert models on display](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-12-1wdfh-900.webp) ![Display letting you preview the dessert types](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-13-jxoba-900.webp) There was a good variety of desserts, and it looked like they made each one in-house!! Out front they had model replicas of each dessert that were exactly the same size and shape as the real thing, which was great because you could see what you were ordering before you got it. - Oolong tea - Biscuit - Pistachio cream puff ![Oolong tea and desserts served at the table](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-14-wpmet-900.webp) I enjoyed my desserts with tea. After ordering, they brought everything to my table one by one! And when it was time to leave, you just leave everything on the table and they take care of clearing it. Even with so many seats, they remembered where each guest was sitting — that was kind of touching, haha. ## The oolong tea comes properly brewed in a teapot For my drink I picked oolong tea — I figured it would just be a teabag, but it actually came properly steeped in a teapot to pour into a cup. It made me so happy to get to drink tea done properly like this, ㅜㅜ ![Hot oolong tea brewed in a teapot](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-15-md6tg-900.webp) I ordered it hot, and the teapot held its warmth surprisingly well, so even sipping slowly, it stayed warm all the way to the last cup, haha. The oolong wasn't strongly scented either, so I think even people who aren't into tea would find it easy to drink! ## How's the biscuit? Crisp outside, moist inside, with a savory roasted-salt kind of flavor ![A biscuit on a plate](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-16-16kez-900.webp) ![Freshly baked exterior of the biscuit](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-17-1q3hr-900.webp) ![Moist inside of the biscuit, split in half](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-18-b4swp-900.webp) ![The biscuit enjoyed alongside oolong tea](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-19-1eowk-900.webp) This one is the biscuit — it looked kind of like KFC's biscuit-scone thing, so I had to try it! (I really love KFC biscuits...🫶🏻) Maybe because I got it fresh out of the oven, the inside was completely moist, while the outside was slightly crisp — the moist, chewy inside was so good, ㅜㅠ It's a little hard to describe this biscuit's particular savory flavor, but it's kind of like... roasted salt? It's delicious and nutty even without adding jam — such a good dessert!! I think I'll definitely get this biscuit again whenever I come back. ## Pistachio cream puff ![Pistachio cream puff made of three joined pieces](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-20-129s2-900.webp) ![Cross-section of the puff filled with pistachio cream](https://img.superchart.com/images/seongsu-weekend-cafe-oolong-tea-biscuit/seongsu-weekend-cafe-oolong-tea-biscuit-21-1rmkh-900.webp) This is the pistachio cream puff, which looks like three big puffs fused together. It's packed full of pistachio cream inside — nutty, sweet, and insanely soft — so I'd highly recommend this to anyone craving a sweet dessert! I always thought Seongsu was just packed and loud everywhere, cafés and all — so it was a whole discovery to find a place here with dessert this good, drinks done properly, a comfortable atmosphere for light work, and I think I'll be coming back often from now on. ## 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/@tiled-coffee-cup/seongsu-weekend-cafe-oolong-tea-biscuit/ · https://superchart.com/llms.txt