Gilpost · Seongdong-gu, Seongsu-dong 1-ga
Korean
SEAONE
시원 Siwon Siwon is the Korean word for 'refreshing' (as in a cool or clean-tasting broth), and the Latin sign SEAONE plays on 'sea' — the house serves Pohang-style seafood.
Compiled from 15 blog posts read in fullSources →
Siwon (SEAONE) is a Pohang-style seafood restaurant in an alley off Sangwon 10-gil in Seongsu, within walking distance of Ttukseom Station. Many posts list the cold raw fish soup set, raw fish rice bowl and fresh cod stew (clear or spicy) at 18,000 won, and seaweed soup at 11,000 won (abalone +5,000). Nearly every visit describes six or seven side dishes — fried eggplant, scallop salad, shrimp salad, seasoned cockles. Several posts say it fills with office workers at lunch. We read 25 posts from November 2024 to October 2026; 15 record an actual meal. We set aside 6 as other restaurants or name collisions, and did not count 4 that were promotions or lists.
Data as of · Published ·
Location & hours
- Address서울특별시 성동구 상원10길 7 (성수동1가,(지상1층))7 Sangwon 10-gil, Seongdong-gu, Seoul
- Phone02-466-9722
- Typical spend₩7,000 – ₩20,000
- From the station2 posts say it is walkable from the station.
- Floor areaFloor area 60 m² · Status In business
When it opens
Of 3 posts: 2 wrote Daily 11:00–21:30.
| Daily | 11:00–21:30 | 2 of 3 posts |
|---|
Counted from what bloggers wrote in their posts; we did not confirm it with the restaurant. Where the values differ, it may be a change over time rather than a disagreement, so we show when each one was written.
What sets it apart
- Five posts said the portions were large, one calling the cold raw fish soup set huge. One post said the raw fish soup was a little short for an adult man, and another said the rice with the cod stew was small.
- Ten posts talked about price. Four found it expensive for a regular lunch, three said it was fair given the side dishes, and two started out thinking it pricey but came round after seeing the spread. One post noted Onnuri gift certificates are accepted.
- Two posts mention a hand-washing sink inside the dining room; one placed it just to the right of the kitchen.
- Six posts called it clean. Several said the white exterior and wood interior made them take it for a café or a Western restaurant at first. One mentioned floor-to-ceiling windows and another sat at a seat looking outside.
What 15 bloggers said
mulhoe jeongsik
Clean
We read all 15 in full. The most common claims are “Clean” (6) and “Large portions” (5).
What they liked
What they struggled with
Where they disagree
| Expensive | yes 4 · no 3 |
|---|---|
| Salty / strongly seasoned | yes 2 · no 3 |
Things you can check on site
- Large windows 2 of 15 posts
- Seats to sit and eat 2 of 15 posts
- Hand-wash sink in the dining area 2 of 15 posts
- Reachable by transit 2 of 15 posts
- Free refills 1 of 15 posts
- Self-order screen 1 of 15 posts
- Local currency accepted 1 of 15 posts
These are raw counts, not percentages. Someone who did not mention something is not someone who disagreed.
Parking
1 posts say you cannot park. None say you can.
| Posts saying you cannot | 1 of 15 posts |
|---|
One post said there is no parking at the restaurant; they used a nearby public lot, which had plenty of space on a Saturday evening. Other posts' 'no parking' lines come from copied info blocks.
Who came, and with whom
- Group visit 5 of 15 posts
- With a friend 2 of 15 posts
- Family visit 1 of 15 posts
- Solo visit 1 of 15 posts
- Came by car 1 of 15 posts
Where it is
We could not find this shop’s own listing on Naver Map, so the link searches for its Korean name around this spot instead.
From the station
2 posts say it is walkable from the station.
Getting inside
| Toilet inside | yes 0 · no 1 (of 15 posts read) |
|---|
No post said which floor it is on or whether there are steps. The 'ground floor' in the registered address is not something anyone reported.
We don't know whether there is a step at the entrance or whether a wheelchair or stroller can get in — not because there isn't, but because nobody wrote about it.
One post said the toilet is outside the restaurant; another post said the same but in a copied info block, so we didn't count it. Nobody described whether it is gender-separated or how big it is.
No one mentioned: Second floor · In a basement · Lift to the floor · Ramp at the door · Step at the entrance · Step-free access · Accessible toilet · Separate restrooms. That is not the same as there being none — it means we could not confirm it. Worth calling ahead, and do tell us: we will put it here.
How to read these posts
- Posts saying they paid themselves5 of 15 posts
- Posts saying nothing either way10 of 15 posts
Posts that followed a TV spot
Of the 19 posts we gathered, 4 went up on a single day right after a TV spot and show no sign of a visit. They retell the broadcast, so we left them out of the counts.
We do not discard them. That a TV spot produced a burst of posts is itself something worth knowing about a place, and a star rating will not show it.
When the posts appeared
Month by month
| Month | Posts |
|---|---|
| 2024-11 | 1 |
| 2025-01 | 1 |
| 2025-03 | 2 |
| 2025-04 | 2 |
| 2025-09 | 4 |
| 2026-01 | 1 |
| 2026-02 | 1 |
| 2026-07 | 2 |
| 2026-08 | 1 |
What we do not know
- Saltiness splits: two posts found it salty (one said the cod broth was very salty that day, another that the raw fish soup is salty if you add all the sauce at once), three said it was not salty.
- Opening hours changed. Posts from March–April 2025 gave Sunday–Friday 11:00–22:00, closed Saturdays, last orders 14:15 and 21:15. Two posts from September 2025 on gave 11:00–21:30 every day, and one of them visited on a Saturday evening. That post also found a break (about 15:00–17:00) not shown on Naver — a 4:20 pm phone call was told it was break time. Early closing when ingredients run out is copied from listings, not observed.
- Prices have been rising. An October 2024 visitor found the cod stew at 18,000 won though the internet said 15,000, and a March 2025 post heard prices had gone up. One August 2026 post wrote 20,000 won for a set; with only that one post we can't confirm it is the current price.
- Two posts walked from Ttukseom Station — one gave 285 m from Exit 2, the other five minutes from Exits 2, 3 or 4. No post came by bus.
- No post actually waited. One said there is a wait at weekday lunch peak, another that it is busiest from about 11:30 to 12:40 and quieter afterwards. Nobody gave a wait time.
- Most visits were with groups of coworkers (five posts); two were with friends, one with family, one alone.
- We could not confirm the phone number: 02-6082-0525 (a copied info block, March 2025) and 02-466-9722 (Seongdong-gu public listing) each appear once. No post says whether reservations are taken.
Sources (15)
Every number above was counted from the posts below.
- 성수 뚝섬역 시원, 포항 가자미 물회, 회덮밥, 과메기, 반찬 맛집 2026-08-21 · 아라다 일상
- 2604 출산 전까지의 기록, 먹고병원가고 태동검사 2026-07-29 · JJaily Routine · via Daum
- 반년이 지나서야 쓰는 로스쿨 3학년의 일상(feat. 피에서 영양제가 흐르는 사람) 2026-07-01 · 기록장 · via Daum
- [시원] 뚝섬 직장인 점심 메뉴 추천 겨울엔 생대구탕 여름엔 회덮밥 사계절 책임지는 포항 요리 전문점 2026-02-26 · 시작을백번하기 · via Daum
- [성동구] 물회 미역국 맛집 뚝섬 시원 2026-01-07 · 긴글타자연습
- 뚝섬역 성수 맛집 추천 '시원 SEAONE' 물회 회덮밥 맛집 내돈내산 2025-09-10 · 다이빙왕초보
- [성수] 시원 성수맛집 생선구이 미역국 전복 물회 회덮밥 대구탕 2025-09-10 · HYERRINESS · via Daum
- 뚝섬역 성수 정갈하고 깔끔한 점심추천 시원 SEAONE 한번 가본걸로 만.... 2025-09-07 · 쿨가
- 시원 SEAONE : 물회 회덮밥 한정식 성수맛집 뚝섬맛집 한식 반찬 정갈한 곳 내돈내먹 2025-09-01 · 하나만의 이모저모 •̤ ༝ •̤ · via Daum
- [뚝섬/성수] 시원 Seaone, 성수동 한식 맛집 (물회 해물탕 전문점) 2025-04-27 · P.archives
- [성수동/뚝섬역 맛집] 포항요리 전문 물회 맛집 '시원 SEAONE' 2025-04-13 · 코지의 일상
- [뚝섬 맛집] 시원, Seaone 2025-03-14 · ssssi____h · via Daum
- [서울/뚝섬] 시원 - 정갈한 한식 맛집 2025-03-09 · 이지's Daily log
- 뚝섬 직장인 정갈한 점심 맛집 '시원 seaone' 2025-01-03 · 모(르마)무 블로그. · via Daum
- 뚝섬 나들이 2024-11-10 · 더존세의 맛깔나는 인생 꾸미기
Of 262 candidate posts we opened 120 and kept 15 as evidence. We have not seen them all yet; another pass would add more.