Gilpost · Seongdong-gu, Seongsu-dong 2-ga
Japanese
Omonja Seongsu-jeom
오몬자 성수점 Monja is short for monjayaki, the runny Tokyo griddle dish the house serves; the 'O' reads as an exclamation, as in the house set written 'Oh! Monja Set'.
Compiled from 24 blog posts read in fullSources →
A Tokyo-style monjayaki griddle restaurant on the third floor of the Yeopgi Tteokbokki building at Yeonmujang-gil 31-1, Seongsu. Every table has a griddle; staff chop the cabbage, pour the batter and shape the monjayaki at your seat, then you wait two or three minutes for it to crisp and scrape it up with a small spatula. The most-ordered dish is the pollock-roe mochi monjayaki (21,800 won), and twelve visit posts took the set for two: one monjayaki, yakisoba or okonomiyaki, and two drinks (43,000 won). We read 30 posts from 2026-09-23 to 2026-10-06; 24 describe eating here, and 6 were set aside as posts about the Gangnam or Yeonnam branches or unrelated places that only linked here.
Data as of · Published ·
Location & hours
- Address서울특별시 성동구 연무장길 31-1, 금호아파트 상가동 301호 (성수동2가)31-1 Yeonmujang-gil, Seongdong-gu, Seoul
- Phone02-468-0555
- Typical spend₩5,800 – ₩52,000
- From the station4 posts say it is walkable from the station.
- Floor areaFloor area 126 m² · Status In business
When it opens
Of 14 posts: 8 wrote Daily 11:30–23:00, 7 wrote Friday 11:30–24:00, 7 wrote Saturday 11:30–24:00.
| Daily | 11:30–23:00 | 8 of 14 posts |
|---|---|---|
| Monday | 11:30–23:00 | |
| Tuesday | 11:30–23:00 | |
| Wednesday | 11:30–23:00 | |
| Thursday | 11:30–24:00 | |
| Friday | 11:30–24:00 | 7 of 14 posts |
| Saturday | 11:30–24:00 | 7 of 14 posts |
| Sunday | 11:30–23:00 | |
| Last order | 22:00 | 7 of 7 posts |
Rows without a count: 4 of 14 posts.
1 other values
| Open | Thursday | 11:30–23:00 2 of 14 posts last seen 2026-09 |
|---|
The values differ, but the periods they were written in do not overlap. This looks like a change over time rather than a disagreement, and the top row is the most recently reported. We did not confirm it with the restaurant.
What sets it apart
- Twenty-one of the 24 visit posts say staff cooked the monjayaki at the table. Many describe the rapid chopping on the griddle as a show, and several mention the cook drawing a cat or smiley face with parsley or seaweed at the end. One post warns that two portions of the same flavour cooked at once never cook through at the edges, and advises asking for them one at a time.
- Ten posts call the room large. One counted more than twenty two-seat tables, each with its own griddle; another found the tables well spaced and the ceiling high enough that it never felt loud. One post, though, found it noisy and chaotic from smoke and griddle clatter, so the noise verdict splits one to one.
- One post waited: about 14 groups ahead at 8 pm on a Friday, cleared in roughly 30 minutes. Six posts were seated right away, at times like 4:30 pm, early evening, weekday daytime and weekend lunch. Other posts say peak evenings have queues, but as hearsay or guesses, so we did not count them.
- Four posts walked from Seongsu Station, about five minutes from Exit 4.
1 more
- Posts went with friends (6), a partner or spouse (5) and family (2, a mother and a sibling); one group of four ordered across the menu.
What 24 bloggers said
Myeongnan Mochi Monjayaki
Roomy
We read all 24 in full. The most common claims are “Roomy” (10) and “No wait” (6).
What they liked
What they struggled with
Things you can check on site
- Staff cook it at your table 21 of 24 posts
- In a basement saying it is not 13 of 24 posts
- Beer served 6 of 24 posts
- Self-order screen 5 of 24 posts
- Reachable by transit 4 of 24 posts
- Lift to the floor saying it is not 3 of 24 posts
- Review event 3 of 24 posts
- Foreign customers in the room 1 of 24 posts
- Toilet inside 1 of 24 posts
- High ceiling 1 of 24 posts
- Air conditioned 1 of 24 posts
These are raw counts, not percentages. Someone who did not mention something is not someone who disagreed.
Parking
2 posts say you cannot park. None say you can.
| Posts saying you cannot | 2 of 24 posts |
|---|
Two posts found from experience that the building has no parking, and both used a nearby paid lot booked through an app. The 'no parking' lines in other posts are copied info blocks.
Who came, and with whom
- With a friend 6 of 24 posts
- Date 5 of 24 posts
- Family visit 2 of 24 posts
- Came by car 1 of 24 posts
- Group visit 1 of 24 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
4 posts say it is walkable from the station.
Getting inside
| In a basement | yes 0 · no 13 (of 24 posts read) |
|---|---|
| Lift to the floor | yes 0 · no 3 (of 24 posts read) |
| Step-free access | yes 0 · no 1 (of 24 posts read) |
| Toilet inside | 1 of 24 posts |
Thirteen posts describe going up to the third floor, and three of them say there is no elevator, so it is stairs all the way. Posts note the building entrance is on the side and shared with Yeopgi Tteokbokki, which confused one visitor.
Only one post addresses wheelchairs or strollers: too many stairs and no elevator, so neither can get up. Nobody mentions a threshold or ramp.
Only one post mentions the toilet, saying it is inside the restaurant. Nobody says whether it is separated by gender or how big it is.
No one mentioned: Second floor · Ramp at the door · Step at the entrance · 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 themselves6 of 24 posts
- Posts saying nothing either way18 of 24 posts
When the posts appeared
Month by month
| Month | Posts |
|---|---|
| 2026-09 | 17 |
| 2026-10 | 7 |
What we do not know
- Opinions on price split. One post questioned whether the 21,800-won roe-mochi monjayaki was worth it; another said three people ate their fill for around 10,000-some won each. The two-person set was written as 43,000 won twice, 42,000 won once, and 52,000 won for the Asahi version.
- One post found it too salty as the meal went on; others used 'salty' approvingly, as a good match for beer.
- Fourteen posts list opening hours, all as copied info blocks, and they disagree on late nights. Most agree on 11:30 to 23:00 with last order at 22:00, but four say it stays open until midnight Thursday to Saturday, three say Friday and Saturday only, and one says midnight every day. No post mentions a closing day.
- Seven posts list the phone number 02-468-0555. Several also say Naver reservations are available, but only as copied info; no post says it booked ahead.
- Three visit posts follow the same promotional template of headings, hashtags and a closing recommendation, but none disclose sponsorship, so we counted them as written. Six posts state they paid their own way.
Sources (24)
Every number above was counted from the posts below.
- 성수 이자카야 몬자야끼 맛집 | 오몬자 성수점 내돈내산 후기 2026-10-06 · 애정하는 것들을 올려요
- 성수 핫플 도쿄감성 낭낭한 오몬자 성수점 내돈내산 방문 후기 2026-10-05 · Happy Pig's Blog
- 성수맛집 오몬자성수, 일본 감성 가득한 몬자야키 맛집 2026-10-03 · Hi0 하이오, 하루기록 · via Daum
- [성수 맛집] 요즘 성수에서 핫한 몬자야끼 ‘오몬자 성수점’ 솔직 .... 2026-10-03 · 챈쥐네
- 성수핫플 맛집 오몬자 성수점 엄마랑데이트 2026-10-01 · 광란의일상_행복하콩 ♡
- 성수 몬자야끼 오몬자 내돈내산 후기 환상의 양배추 파괴쇼 서울 몬자야끼 오이데 2026-10-01 · 대왕돼지으 맛집 투어 · via Daum
- 성수 맛집 - 몬자야끼 전문점 성수 오몬자 후기 2026-10-01 · eunniii_note._.
- 2026년 9월 사진 털기 2026-09-30 · 그림자 놀이
- 성수 몬자야끼 성수동 맛집 오몬자 성수점 내돈내산 솔직후기 2026-09-30 · 밍뭉로그 : 20대 알짜배기 여행
- 성수 몬자야끼 맛집 오몬자 성수점 | 웨이팅 주차 내돈내산 솔직 후.... 2026-09-28 · 쨍로그
- 비주얼은 포기하지만 맛은 챙긴 몬자야끼, 오몬자 성수 [내돈내산] 2026-09-27 · 김감자의 나들이 후기
- 성수동 <오몬자> 몬자야끼 오코노미야끼 + 하이볼 맛집 2026-09-27 · 오늘, 청주에서
- 성수역 맛집 놀거리 추천｜친구랑 다녀온 성수 하루 코스, 쇼핑부터 몬자야끼·한정선까지 🛍️🍽️ 2026-09-27 · 슈단토리_infp_q · via Daum
- 26년 8월 일상 (1) 2026-09-26 · 森
- 성수에서 처음 먹어본 몬자야끼 오몬자에서 명란모찌 몬자야끼 + 크.... 2026-09-26 · 일상생활
- 성수맛집 :: 도쿄 몬자야끼 전문점 오몬자 웨이팅맛집 점심 리얼후.... 2026-09-24 · ur beliefs become ur thoughts
- 성수 맛집 성수동 데이트코스 추천! 일식 철판 요리 몬자야끼 맛집 .... 2026-09-24 · 연조의 여행 스케치
- 성수맛집 오몬자 성수점 돼지김치몬자부터 믹스야끼소바까지 오몬.... 2026-09-24 · 마늘젤라투의 히든 라이프
- 서울숲 맛집 일본 현지 느낌으로 핫플 느낌 나는 오몬자 2026-09-24 · 한주네
- 성수에서 처음 먹어본 몬자야끼, 오몬자 성수점 2026-09-24 · PROJECT U 님의 블로그
- [성수 맛집]_오몬자 성수점/생새우 몬자야끼+야끼소바 맛 후기! 일본.... 2026-09-24 · gon daily
- 성수역맛집 오몬자 성수점 일본느낌 제대로 2026-09-23 · Mokagold 블로그
- [성수] 오몬자 성수점 - 떠들면서 먹기 좋은 음식 1위 2026-09-23 · 배빵빵
- 일본 츠키시마 정통 몬자야끼 전문점 '오몬자 성수점' 세트메뉴 추.... 2026-09-23 · 티티아
Of 305 candidate posts we opened 72 and kept 24 as evidence. We stop once 30 are confirmed: beyond that the counts grow in proportion without changing the answer.