Seongsu café for lemon cream sandwiches and lattes: T Coffee

In short

T Coffee is a dessert café in Seongdong, Seoul, set just off Seongsu-dong’s busy streets. On a weekday afternoon, I shared a matcha latte, café latte, and lemon sandwich with my sister amid spacious tables and big windows. Verdict: Come for the rich lattes and bright lemon cream sandwich.

A candlelit table at T Coffee

Good to know

Address
B1, 159 Achasan-ro, Seongdong-gu, Seoul, South Korea (서울 성동구 아차산로 159 지하 1층)
Hours
Mon–Fri 09:00–20:00 / Sat–Sun 11:00–20:00
Amenities
Takeout, Wi-Fi, separate restrooms, and group seating
Seating
Group tables for about four people
Order
Matcha latte, café latte, and lemon sandwich

as written by the visitor on Sep 12, 2026

T Coffee, a break from Seongsu’s bustle

I was in Seongsu-dong for an errand and happened to find T Coffee (티커피) just when I wanted to take a quiet little break! It is slightly removed from Seongsu-dong’s bustling streets, so it felt peaceful and laid-back. I also loved its leafy yet polished mood. It is a hidden Seongsu-dong café that is great for spending time alone or enjoying a quiet date.

Head down to B1 and you will find the hidden T Coffee! The interior is super neat and comfortable. It is perfect for anyone looking for a quiet café in Seongsu-dong.

Inside T Coffee on basement level 1

The stairs are steep, so be careful on the way down. There was also a pizza place right next to T Coffee.

Steep stairs leading down to T Coffee
Pizza place near T Coffee

They sell simple yet luxurious-looking desserts, which are lovely with coffee. The coffee beans were wonderfully nutty and delicious, too.

Coffee and desserts at T Coffee

A calm interior with big windows and spacious tables

Carefully, carefully, I headed down to B1. The owners were really kind, and there were plenty of tables, so it did not feel crowded at all.

There are quite a few group tables that seat about four people. The red table chairs were so striking. Although it is on B1, the full-height windows make it feel open rather than stuffy.

Café interior with red table chairs
Seating at T Coffee with large windows

It somehow captures Seongsu-dong’s hip vibe perfectly. It would be nice to have pizza first, then come here for dessert and coffee as a second stop. It is pleasantly quiet, and the big-window view feels cozy and warm.

Inside T Coffee with a big-window view

Ordering matcha latte and lemon sandwich

I ordered a matcha latte, café latte, and lemon sandwich. They also sell various sandwiches and scones. The desserts look refined in a way you do not easily see elsewhere. You absolutely, absolutely have to try the sandwiches.

Matcha latte, café latte, and lemon sandwich

Now I am curious about the chocolate sandwich, too. T Coffee really seems to be a sandwich-dessert gem, hahaha. The luxurious butter aroma hits you right away—it totally passed my taste test.

Buttery sandwich dessert
Sandwich dessert at T Coffee

The beans were very bold, so the latte was wonderfully nutty and rich :) Since it is underground, it feels like a hidden café known only to those in the know. The coffee is delicious, the desserts are delicious, and the atmosphere is good, good. I was happy to discover another new café in Seongsu-dong.

Rich latte and dessert
Café scene at T Coffee in Seongsu
Spacious tables at T Coffee

And there really are lots of tables! I visited on a weekday afternoon, and I loved that it was not crowded. I wonder what the atmosphere is like on weekends~

There is a candle lit at every table, and the mood is so nice. It must create a different atmosphere in the evening, right? I think it would be wonderful for a date, too.

The interior is very comfortable and tidy. It is the kind of café that makes you want to stay longer. Some people were working on laptops alone, and I think it would also be great for a private, uninterrupted date or a first date, haha.

A candlelit table at T Coffee

Clean matcha and tangy lemon cream

The matcha latte, café latte, and lemon sandwich arrived. Once you are seated, the owners bring them directly to your table.

Matcha latte, café latte, and lemon sandwich spread
Drinks and lemon sandwich at T Coffee

The matcha latte did not have an artificial sweetness, so I enjoyed how clean it tasted. I do not like overly sweet drinks these days, and its clean matcha flavor suited me perfectly. The finish was pleasantly bitter yet clean! I loved that it did not leave a heavy aftertaste. The latte was also smooth and nutty, with rich coffee beans blending into the milk, and it went so well with the sweet-and-tart dessert.

Matcha latte and rich café latte

It was such a good place to talk that my sister and I chatted away for the first time in ages~ The drinks were delicious, and so was the lemon cream sandwich.

Lemon cream sandwich dessert
Sweet-and-tart lemon sandwich

The lemon flavor burst through so brightly and the cream was so soft that my eyes went wide the moment I took a bite. The cream is wonderfully sweet and tart! If you like lemon, you have to try it.

Sandwich filled with lemon cream
T Coffee lemon sandwich dessert

Not only was the interior lovely, but the coffee and desserts were so delicious that I was very satisfied! Next time, I want to try another sandwich dessert~ The latte was so good that I am curious about the other drinks, too.

With calm music, delicious coffee and desserts, and a comfortable, open, spacious café, I got a proper bit of after-work healing before heading out. Among Seongsu-dong’s many cafés, this one feels especially cozy and special.

Enjoying coffee and dessert at the café
Cozy scene at T Coffee

It is the very definition of a luxurious sandwich. It is the sort of sandwich that makes you want to give it as a group gift, thanks to the premium butter they use, haha. The lemon cream inside is especially the star. It goes well with a sweet latte and with bitter coffee, too. You absolutely have to have dessert with your drink!

Premium buttery lemon cream sandwich

It had been a while since my last Seongsu-dong outing, and it was a success as always, haha. If you are looking for a calm café with a lovely atmosphere and great dessert coffee in Seongsu-dong, I recommend T Coffee!

Where it is

T Coffee (티커피)티 커피

B1, 159 Achasan-ro, Seongdong-gu, Seoul, South Korea (서울특별시 성동구 아차산로 159 지하1층)서울특별시 성동구 아차산로 159 지하1층

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