Signature course for two at Flat Nine, a Sinnonhyeon jazz bar

In short

Flat Nine is a live jazz bar and course dining restaurant on the 5th floor of a building in the alley between Gangnam Station and Sinnonhyeon Station in Seocho, Seoul. A 3pm reservation for the signature course for two brought an aperitif, amuse-bouche, bread and salad, lasagna, steak and dessert in order, and live jazz followed from 4pm. Flat Nine is worth recommending as a Sinnonhyeon date course for anyone who wants dinner and a show in one place.

Main photo of Flat Nine, a jazz bar near Sinnonhyeon

Good to know

Location
Alley between Gangnam Station and Sinnonhyeon Station, 5th floor (elevator access)
Hours
Weekdays 18:00-23:00 (last order 22:30)
Visit time
Reserved for 3pm; live jazz performance from 4pm
Ordered
Signature course for two
Menu
Course menus plus à la carte pasta and steak, wine, cocktails and other drinks

as written by the visitor on Sep 17, 2026

Main photo of Flat Nine, a jazz bar near Sinnonhyeon

Where is Flat Nine and what are its hours?

Flat Nine is a live jazz bar on the 5th floor of a building in the alley between Gangnam Station and Sinnonhyeon Station. It's open weekdays 18:00–23:00, with last order at 22:30, and you visit by reservation.

The Gangnam-daero alley building where Flat Nine is located
Flat Nine's 5th-floor signage at the building entrance

[ Flat Nine exterior, a Sinnonhyeon date spot ] Flat Nine sits in an alley between Gangnam Station and Sinnonhyeon Station packed with restaurants and bars, so it was easy to find! Once you reach the building you'll see the Flat Nine signage, and taking the elevator to the 5th floor puts you right at the entrance. I'd booked a 3pm reservation, and even before stepping inside I could already feel that distinct jazz-bar atmosphere — it got me excited haha. Flat Nine is a place where you can enjoy live jazz along with your meal, so I'd really recommend it if you're looking for a bar near Gangnam Station or a special date spot near Sinnonhyeon!

Flat Nine's dimly lit interior and stage
Flat Nine's stage with a grand piano
Flat Nine tables arranged facing the stage
Flat Nine seating area under soft lighting

Inside Flat Nine: seating close to the stage

[ Inside Flat Nine ] The moment I walked in, the dim lighting and grand piano gave off a classy jazz-bar mood. The lighting was low and soft throughout, which made the atmosphere feel even cozier, and the tables were arranged facing the stage so it was easy to focus on the performance. What felt like Flat Nine's own charm was how close the stage was to the seating — you could enjoy live jazz right while you ate!

View of the stage from Flat Nine's seats
Table setting at Flat Nine
Flat Nine's menu listing courses, à la carte dishes and drinks

What is on the menu at Flat Nine?

Flat Nine has everything from pasta and steak to a wide range of drinks, so it's good for enjoying a meal and a drink together. Alongside its own course menu, there are à la carte options like pasta and steak, plus a good variety of wine and cocktails — a lineup that suits both people looking for pasta near Gangnam Station and those who want to keep drinking after the meal.

We came in at 3pm and started the meal at a relaxed pace, and from 4pm the live jazz kicked in, so we got to enjoy food and music together!

Ordering the signature course for two

[ Ordered ] Signature course for two

Table setup for Flat Nine's signature course for two

We ordered the signature course for two that day. Starting with a welcome drink and a light amuse-bouche, then moving through bread and salad, lasagna, the main dish and finally dessert — the course structure made for a relaxed, leisurely meal, and I'd fully recommend it for a special occasion! Since the dishes came out one by one in order, it was great for tasting each one while chatting, and it also suited anyone looking for pasta near Gangnam Station.

Welcome drink served as the first course
A glass of welcome drink on the table

It started with a simple welcome drink, then the course dishes began arriving one after another. Everything is brought to the table by the staff, which made enjoying the course feel comfortable and atmospheric.

Flat Nine's cleanly plated amuse-bouche

Aperitif and amuse-bouche

From the welcome drink and the amuse-bouche that followed it, every single dish was plated beautifully and cleanly. You could really feel the care put into each one — clean flavors, and really delicious.

Plate of bread and amuse-bouche from the course
Fresh vegetable salad served mid-course

Bread and salad

The salad that came next was a light course of fresh vegetables, and it felt like it cleared the palate nicely before the pasta and main dish to come.

A plate of salad that refreshed the palate

Lasagna

The lasagna that followed is one of the dishes served as part of the Flat Nine course — the layers of pasta and sauce came together for a hearty, satisfying bite.

Layered lasagna from the Flat Nine course
A cross-section of the lasagna after a bite was taken

This lasagna was even better than I expected! I found myself wanting to eat it again — total taste-match for me!

Steak served as the main course

The main course: steak

The main course was steak, which anchored the meal, and eating through everything from the light starters to the main in order made the whole meal feel really substantial.

Close-up of Flat Nine's steak
Cross-section of the sliced steak

The quality of the steak in particular was really good. Genuinely delicious for the price..! The meat practically melted — I was honestly surprised. Total win.

Flat Nine's live jazz performance starting at 4pm

Live jazz from 4pm at Flat Nine

The jazz performance kicked into full swing partway through the meal! What made Flat Nine special was being able to enjoy a meal and live jazz together. We'd booked for 3pm, and while we were eating the jazz performance started at 4pm, so we got to enjoy food and music at the same time.

Dessert served as the final course

Finishing the course with dessert

We wrapped things up with dessert! A sweet little something to cleanse the palate after the meal made for a clean, perfect finish to the course.

Being able to enjoy an atmospheric meal and a live show all in one place makes this a great match for anyone looking for a bar near Gangnam Station, pasta near Gangnam Station, or a special date spot near Sinnonhyeon — I'd really recommend it as a Sinnonhyeon date course!

Where it is

Flat Nine플랫나인

10 Gangnam-daero 65-gil, 5th floor, Seocho-gu, Seoul, South Korea서울특별시 서초구 강남대로65길 10 5층

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