Gilpost · Seongdong-gu, Seongsu-dong 2-ga
BarJapanese
Seongsu Ilgu
성수일구 Seongsu is the neighborhood; ilgu reads as the number nineteen (il-gu), and one post links an account named seongsu_19 — no post explains why the house chose it.
Compiled from 16 blog posts read in fullSources →
Seongsu Ilgu is a small izakaya on Seongdeokjeong 17-gil, at the far end of the Ttukdo Market food alley, about 800 m from Seongsu Station exit 3. The center of the menu is the Ilgu sashimi, an assortment of aged fish on one plate, alongside sea urchin with sweet shrimp, chicken nanban, pressed mackerel sushi and napolitan, drunk with draft beer, highballs or sake; at lunch it serves rice bowls such as kaisendon. In July 2026 posts put the Ilgu sashimi for two at 39,000 won and the sea urchin with sweet shrimp at 39,000 won. We read 23 posts from November 2024 to September 2026; 17 record an actual visit. The other 6 are neighborhood lists or template-made guides, and we did not count them.
Data as of · Published ·
Location & hours
- Address서울특별시 성동구 성덕정17길 3-1, 1층 (성수동2가)3-1 Seongdeokjeong 17-gil, Seongdong-gu, Seoul
- Phone0507-1400-5359
- Typical spend₩6,000 – ₩45,000
- From the station1 posts say it is walkable from the station.
- Floor areaFloor area 27 m² · Status In business
When it opens
Of 8 posts: 3 wrote Sunday 12:00–02:00, 3 wrote Weekdays 12:00–03:30, 2 wrote Saturday 12:00–03:30.
| Weekdays | 12:00–03:30 | |
|---|---|---|
| Saturday | 12:00–03:30 | 2 of 8 posts |
| Sunday | 12:00–02:00 | |
| Break | 15:00–17:00 | 3 of 3 posts |
| Last order | 02:30 | 2 of 5 posts |
| Closed | Monday | 4 of 8 posts |
| Closed | Tuesday | 4 of 8 posts |
Rows without a count: 3 of 8 posts.
1 other values
| Last order | 23:00 2 of 5 posts last seen 2025-03 |
|---|
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
- Cabbage arrives as soon as you sit down: nine posts say a plate of raw cabbage (with pickled radish and rakkyo) came free, and several call the dipping sauce unlike anything they had had. A November 2024 post says the owner refilled it three times; a July 2026 post says each extra plate cost 1,000 won.
- The walls are covered with celebrity autographs: five posts say they saw them, one naming Byul, Kwanghee, Lim Hyun-joo, Choi Jun and Jeong Ju-ri. Two more posts only say many celebrities come; we could not tell whether they saw or heard it, so we left them out.
- It is a small room: eight posts say so. The table counts differ — 'two 2-seat and about two 4-seat tables' in November 2024, three 2-seat and five 4-seat in July 2026, five 4-seat and two 2-seat in August 2026. We cannot tell whether the room grew or the estimates differ. A January 2025 post mentions bar seats alongside tables for up to four.
- Five posts call the owner or staff kind, and gifts on the way out keep coming up: chocolate Umaibo (Jul 2026, Mar 2025), complimentary sake (Mar 2025, Apr 2026), an off-menu bingsu and caprese (Nov 2024), and a bag of treats, two per person (Aug 2026). The March 2025 visitor was also handed a flower for Women's Day.
4 more
- Four posts say it is not expensive for Seongsu — cheap for the quality, and six fried oysters for 9,000 won is easy on the wallet. One post says three women ate 250,000 won worth; another itemizes sea urchin with sweet shrimp, chicken nanban and two bottles of soju at 68,000 won.
- Five posts went with friends, three with a partner or spouse, one alone and one in a larger group; several came here as a second or third stop of the night.
- Fried dishes split: two posts found the fried oysters and karaage crisp, while one found the chicken nanban moist rather than crunchy.
- One post says it is easy to find walking down from Seongsu Station exit 3. Others give only the distance — 800 m, about ten minutes — and one warns it is a fair walk from the main Seongsu strip.
What 16 bloggers said
Ilgu sashimi
Friendly staff
We read all 16 in full. The most common claims are “Cramped” (8) and “Friendly staff” (5).
What they liked
What they struggled with
Things you can check on site
- Complimentary starter 9 of 16 posts
- Signed celebrity photos 5 of 16 posts
- Seats to sit and eat 4 of 16 posts
- Beer served 3 of 16 posts
- Takes reservations 2 of 16 posts
- Free refills 2 of 16 posts
- One drink per person required 1 of 16 posts
- Self-order screen 1 of 16 posts
- Reachable by transit 1 of 16 posts
- Flowers to take home 1 of 16 posts
- Time limit on the table 1 of 16 posts
- Phone charging 1 of 16 posts
- Toilet inside 1 of 16 posts
These are raw counts, not percentages. Someone who did not mention something is not someone who disagreed.
Who came, and with whom
- With a friend 5 of 16 posts
- Date 3 of 16 posts
- Solo visit 1 of 16 posts
- Group visit 1 of 16 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
One post says it is easy to find walking down from Seongsu Station exit 3. Others give only the distance — 800 m, about ten minutes — and one warns it is a fair walk from the main Seongsu strip.
Getting inside
| Toilet inside | 1 of 16 posts |
|---|
No post describes the floor from experience; the address says ground floor, but nobody wrote about it.
Nobody says whether there is a step at the door or whether a wheelchair or stroller can get in.
One post says the toilet is inside the shop, clean, stocked with mouthwash and sanitary items, even a fan; another praises the supplies. Nobody says whether it is separated by sex.
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 themselves1 of 16 posts
- Posts saying nothing either way15 of 16 posts
Posts that followed a TV spot
Of the 22 posts we gathered, 6 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 | 2 |
| 2024-12 | 1 |
| 2025-01 | 1 |
| 2025-03 | 1 |
| 2025-11 | 1 |
| 2026-04 | 1 |
| 2026-05 | 1 |
| 2026-06 | 1 |
| 2026-07 | 3 |
| 2026-08 | 2 |
| 2026-09 | 2 |
What we do not know
- We know little about waits. One post walked in early on a weekday evening; another got in straight away on a Saturday night yet says the wait can be long. Claims of Friday–Saturday queues are hearsay and not counted. One post says seating is limited to two and a half hours when people are waiting.
- Two posts say reservations are taken through Naver, and one booked ahead. Four posts give the same phone number, 0507-1400-5359.
- Opening hours and the closing day have changed. Four posts from November 2024 to March 2025 list Tuesday as the day off, weekday dinner from 5 pm and lunch only at weekends (or Friday–Sunday); four posts from July–August 2026 list Monday off and hours from noon to 3:30 am (2 am on Sunday). All are copied info blocks, and even the two November 2024 posts disagree on closing (1 am vs 3 am). Check before going.
- Prices have risen: the Ilgu sashimi for two was 36,000 won in a March 2025 post and 39,000 won in July 2026. Chicken nanban appears at 18,000 won in July 2026 and 19,000 won a month later.
- Some posts were not counted: two guides written from the same template ('taste over looks', '783 m from exit 3'), one neighborhood list posted twice by the same author, and two other lists — none records a visit.
Sources (16)
Every number above was counted from the posts below.
- 성수동 이자카야 성수일구 후기, 일구사시미 닭목살강정 나폴리탄 .... 2026-09-25 · 픽소담 | 생활·맛집·여행·쇼핑 기록
- 230113서울과 230120부산 2026-09-01 · 우리지브로가자
- 7월 일상 | 먹고 먹고 또 먹고 2026-08-17 · 이모저모 · via Daum
- 성수동 이자카야 추천 | 뚝도시장 늦게까지 하는 술집 '성수일구' (.... 2026-08-15 · 눈밀의 맛있는 유람기
- 성수 이자카야 추천 굴튀김이 미쳐버린ㅣ성수일구 2026-07-23 · 몽치의 하루 일과
- [서울/성수] 성수에서 다양한 메뉴와 함께 맛있는 생맥주를 즐기고 .... 2026-07-09 · 너부리의 일상 일기
- 성수 이자카야 성수일구 숙성사시미 성수 술집 2026-07-03 · 맛있는 하루를 모아가는 블로그
- WDA:Whole Different Aweek 2026-06-01 · 대한민국 뜬다~
- 오랜만에 일상 / 퇴근 후 주말 성수 후기.. 2026-05-12 · 묭디의 스케치북 끄적끄적 · via Daum
- 12. 2026-04-01 · w e l c o m e · via Daum
- 아직 더운 9월🍂 2025-11-06 · 깊은 밤에 우리 · via Daum
- [성수] 뚝도시장 이자카야 맛집 "성수일구" 고퀄리티 숙성회 2025-03-13 · 슈마일의 여행 맛집 기록 : )
- 성수 카이센동 맛집! 이자카야로도 방문 가능한 '성수일구' 2025-01-11 · 루지니의 일상탐방
- <성수이자카야/성수일구>뚝도시장에 숨어있는 고퀄리티 안주 맛집! 2024-12-08 · late_autumnn
- 성수동맛집 <성수일구> 분위기 좋은 사시미 맛집 성수이자카야 2024-11-13 · 몰입의 기록
- [서울/성수] ‘성수일구’ - 분위기 좋은 성수이자카야, 성수동맛집 .... 2024-11-08 · 묭묭이의 하루ෆ˙ᵕ˙ෆ
Of 323 candidate posts we opened 120 and kept 16 as evidence. We have not seen them all yet; another pass would add more.