Gilpost · Seongdong-gu, Seongsu-dong 2-ga
Southeast Asian
MAHACHAI
마하차이 Mahachai Mahachai is a Thai name — maha means great and chai means victory; none of the posts say why the house chose it.
Compiled from 23 blog posts read in fullSources →
A Thai restaurant on the second floor of 399 Ttukseom-ro, above a Mega Coffee, a walk from Seongsu Station exit 3 toward Ttukdo Market. Most plates are in the low 10,000s of won — beef noodle soup 11,000, pad thai 12,000, a one-person crab curry rice bowl 15,000, tom yum with noodles 12,000 — ordered by QR code at the table, with shrimp chips and pickled radish brought first. We read 30 posts dated March 31 to September 28, 2026; 27 describe actually eating there. None report a change in prices, menu or seating over that span.
Data as of · Published ·
Location & hours
- Address서울특별시 성동구 뚝섬로 399, 2층 (성수동2가)399 Ttukseom-ro, Seongdong-gu, Seoul
- Phone0507-1317-5678
- Typical spend₩3,000 – ₩27,000
- From the station2 posts say it is walkable from the station.
- Floor areaFloor area 77 m² · Status In business
When it opens
Of 18 posts: 9 wrote Weekdays 11:00–21:00, 9 wrote Weekends 11:30–21:00, 6 wrote Daily 11:00–21:00.
| Weekdays | 11:00–21:00 | |
|---|---|---|
| Weekends | 11:30–21:00 | |
| Daily | 11:00–21:00 | 6 of 18 posts |
| Last order | 20:20 | 11 of 11 posts |
Rows without a count: 9 of 18 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
- Free shrimp chips and pink pickled radish arrive as soon as you sit down. Ten posts mention them; one says the chips are refilled, and a regular lunch-goer says the chips are her favourite part.
- You order through a QR code on the table. Ten posts say so; one adds that a paper menu was also handed over, and another thought payment was taken up front.
- There is a hand-washing sink inside the dining room; five posts mention it, one also noting a phone charger. The toilet is outside: two posts say you leave the restaurant for the stairwell, one adding you take a key.
- Seven posts say portions are large: one omelette pad thai left a diner stuffed, a light eater left half the nasi goreng, and two people ordering three dishes found it far too much. Another says one 2,000-won bowl of rice was plenty for two.
3 more
- Four posts say food comes out quickly, one timing the beef noodle soup at under five minutes. One post qualifies this: noodle dishes are fast, rice dishes slower.
- Six posts call the owners friendly. One says the place is run by a couple; another says staff explained how to mix the pad thai with sprouts and the owner brought a free cola.
- Large windows let window-side tables look down on the street; four posts mention the windows, window seats or sunlight.
What 23 bloggers said
pat-ta-i
Large portions
We read all 23 in full. The most common claims are “Large portions” (7) and “Friendly staff” (6).
What they liked
What they struggled with
Things you can check on site
- Second floor 11 of 23 posts
- Self-order screen 10 of 23 posts
- Complimentary starter 10 of 23 posts
- Hand-wash sink in the dining area 5 of 23 posts
- Large windows 4 of 23 posts
- Reachable by transit 2 of 23 posts
- Toilet outside 2 of 23 posts
- Free refills 1 of 23 posts
- Discount offered 1 of 23 posts
- Phone charging 1 of 23 posts
- Beer served 1 of 23 posts
- Foreign customers in the room 1 of 23 posts
- Seats to sit and eat 1 of 23 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 23 posts
- Group visit 2 of 23 posts
- Came with children 2 of 23 posts
- Family visit 2 of 23 posts
- Solo visit 1 of 23 posts
- Date 1 of 23 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
| Second floor | 11 of 23 posts |
|---|---|
| Toilet inside | yes 0 · no 2 (of 23 posts read) |
Four posts say you climb stairs to the second floor. No one mentions an elevator, a step at the door, or getting in with a wheelchair or stroller — we don't know, which is not the same as there being none. One post found the stairway up not very clean.
No one mentioned: 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 23 posts
- Posts saying nothing either way18 of 23 posts
Posts that followed a TV spot
Of the 26 posts we gathered, 3 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 |
|---|---|
| 2026-03 | 1 |
| 2026-04 | 5 |
| 2026-05 | 1 |
| 2026-07 | 1 |
| 2026-08 | 7 |
| 2026-09 | 8 |
What we do not know
- Accounts of the size differ: one post calls it fairly roomy, three call it small or compact (about ten tables). Another counts around six tables.
- Only two posts talk about waiting, and they differ: a nearby office worker says you must arrive right at noon to avoid a wait, while another walked in at 1 p.m. without one. A Sunday 7:30 p.m. visit found the room about half full.
- The walk from Seongsu Station exit 3 is put at about 7 minutes in one post and around or over 10 minutes in two. One post says the Ttukdo Market bus stop is right outside.
- Opening hours appear in eighteen posts, all copied from listings. Nine say weekdays 11:00-21:00 and weekends 11:30-21:00; six say 11:00-21:00 daily; single posts give Sunday 10:00-19:30 or 11:30-21:30 daily. Eleven list last orders at 20:20, five say there is no afternoon break, and two say it closes on major holidays.
- Prices are the same across posts from April to September 2026. Until 2 p.m. on weekdays a few dishes (beef noodle soup, pad thai, shrimp fried rice) are 1,000 won cheaper, and one post paid the 11,000-won lunch price for pad thai. Only one post itemises a full meal for two — papaya salad, tom yum with noodles, crab curry, rice and a Chang beer, 57,000 won in all. Two posts say it is good value.
- Eight posts give the phone number as 0507-1317-5678; one list post that never visited gives 02-468-5678. Several mention booking through Naver, but no one says they actually reserved.
- Seven posts from March to September 2026 repeat the same search phrases (Seongsu Station pho, solo dining, Thai restaurant) and recommend it for eating alone though they went with others; one refers to 'a good opportunity' and 'optional keywords', which reads like a commissioned post. None disclose sponsorship; five say they paid themselves. One review cross-posted by the same author on two blogs was counted once.
Sources (23)
Every number above was counted from the posts below.
- 성수 태국식당 마하차이에서 푸팟퐁커리랑 소고기쌀국수먹고 온 후.... 2026-09-28 · 레드스타
- 성수역 마하차이 태국음식점 새콤한 쏨땀 맛있어요 2026-09-20 · 홍이 라이프
- 성수 맛집 '마하차이' 태국요리 똠얌꿍, 푸팟퐁커리, 쏨땀 2026-09-20 · 냠냠뇸뇸 낭만맛객 채채
- 성수 태국음식 맛집 마하차이 성수본점 소고기쌀국수 나시고랭 아.... 2026-09-19 · 주말도 운영하는 청주썬팅 루마버텍스내덕점 청공틴팅
- 26.9.12.토 2026-09-14 · 작고소듕한나의기록 · via Daum
- 성수 쌀국수 먹고 싶을 땐 마하차이 성수본점 ! 성수역 맛집 혼밥 추천 2026-09-14 · 오늘을 소중하게 · via Daum
- [성수맛집] 태국요리 맛집 _마하차이 성수본점 2026-09-13 · .
- 아 그때 사실 좋았구나 2026-09-07 · love love love · via Daum
- 2026年 7月 2026-08-31 · _HJLog_ · via Daum
- [성수]태국요리맛집 ‘마하차이‘ 2026-08-30 · 또리또또와
- [성수] 마하차이 2026-08-11 · J의 인생열차
- 성수 서울숲 나들이: 윤숲 후르츠 산도, 픽베이크, 사슴공원, 마하차.... 2026-08-09 · 20190502
- 성수 태국요리 맛집 추천마하차이 성수본점 방문 후기 (가성비 좋은.... 2026-08-05 · 상순's ESC (Eating, Shopping, Cafe + @)
- [성수 마하차이] 성수 태국음식맛집 내돈내먹 2026-08-04 · 하수의 하루기록
- 성수 마하차이 성수본점 푸팟퐁커리덮밥 내돈내산 2026-08-03 · sunnyminini님의 블로그
- [성수] 마하차이 후기 | 제대로 된 태국음식 맛집 (위치·메뉴·웨이.... 2026-07-31 · 쩝쩝박사가 되고 싶은 사람
- 성수 태국 식당 추천: 이국적인 무드 가득한 마하차이 성수본점 2026-05-01 · Happy Ending♡ · via Daum
- 성수역쌀국수맛집 인정! 브레이크 타임 없는 성수태국식당 ‘마하차이’ 똠얌꿍 입덕 후기 2026-04-29 · 마농의 신혼 라이프로그 · via Daum
- 성수역 근처, 태국 음식 맛집 뿌팟퐁커리 '마하차이 본점' 내돈내산 솔직 후기 2026-04-29 · 음식과 뷰티 그 어딘가 · via Daum
- 성수 카페거리 태국음식 전문점 마하차이 성수본점 ❤️ 2026-04-27 · one week daily ❤️ · via Daum
- 쌀국수 맛집 찾는다면 여기 / 혼밥도 가능한 성수 태국음식 / 성수역 쌀국수 마하차이 / 성수동 태국식당 2026-04-07 · 썸머로그 :) · via Daum
- 따스한 햇살이 머무는 창가, 성수역쌀국수맛집 마하차이 성수본점 2026-04-06 · 유의미한 나 · via Daum
- 성수역쌀국수맛집 마하차이 성수본점 아이와 함께 다녀온 리얼 후기 2026-03-31 · 햄톨이의 여행 · via Daum
Of 317 candidate posts we opened 102 and kept 23 as evidence. We stop once 30 are confirmed: beyond that the counts grow in proportion without changing the answer.