Gangnam jazz bar weekend with a friend: Iberico steak at Flat Nine

In short

Flat Nine is a jazz bar and dining pub serving course meals with live jazz, on the 5th floor on Gangnam-daero 65-gil near Gangnam Station in Seocho, Seoul. On a weekend, the writer booked Flat Nine on Naver and sat with a friend in a center seat facing the stage, pairing a caviar starter, ragu lasagna and an Iberico steak course with whisky and cocktails during a jazz trio set. With the food, the music and the serving timing all satisfying, Flat Nine is an easy recommendation for a date or anniversary near Gangnam Station.

Ragu lasagna and bread from the Flat Nine course

Good to know

Getting there
Gangnam Station Exit 10 · 5-min walk (store listing, Oct 6, 2026)
Location
5F, 10 Gangnam-daero 65-gil, Seocho-gu, Seoul
Reservation
Booked on Naver before visiting
Weekend course menu
Available to order from 3 PM
Weekend shows
Two sets of about 40 minutes each from 4 PM, plus evening shows
Happy hour
Discounted cocktails from 3 PM to 6 PM
Visiting without food
Possible with a performance fee and one drink per person
What we ordered
Course meal (starter, bread and butter, ragu lasagna, palate cleanser, Iberico steak), Black Rye on the rocks, signature cocktail

as written by the visitor on Oct 17, 2026

What kind of bar is Flat Nine near Gangnam Station?

Flat Nine is a bar near Gangnam Station where you can eat a full course meal while watching live jazz right in front of you. Thanks to the Iberico steak course and the jazz, this weekend's Gangnam Station date with my friend was a total success. ♡

Flat Nine, a Gangnam Station bar with live jazz, main photo

Imagine enjoying a delicious course meal in the middle of Gangnam, with live jazz unfolding right before your eyes?!

First impression of Flat Nine near Gangnam Station
Atmosphere inside Flat Nine near Gangnam Station

What is the atmosphere at Flat Nine like?

The lighting, table layout and even the performance stage were stylishly done, so it's a space that suits a special occasion. I liked everything, from the atmosphere to the food, the performance and the service.

I usually like restaurants with a good atmosphere, but at Flat Nine I gasped the moment I walked in.

Flat Nine interior showing the lighting and table layout
Flat Nine interior design and seating
Full view of the Flat Nine hall with the performance stage

How do reservations, seating and weekend show times work at Flat Nine?

I booked ahead on Naver, and because I wanted to really enjoy the performance, I sat in the center seats with a good view of the stage. On weekends, course orders open from 3 PM, and there are two sets of about 40 minutes each starting at 4 PM. Of course, there are evening performances too.

Choosing the center seat was such a good call! Sitting at the table, relaxing over a course meal while watching jazz right in front of you. If you're looking for a Gangnam Station bar with great atmosphere, you'll love this place.

View toward the stage from the center seats at Flat Nine
Flat Nine during the weekend performance hours
Flat Nine course meal and performance information
Table setting and atmosphere at Flat Nine
Performance stage and table seats at Flat Nine

We went at a time when we could enjoy both the food and the performance, and we were really happy with it.

How was the course starter at Flat Nine?

From the bite-sized dish served in a small bowl to the elegant starter topped with caviar, the very first plates looked beautiful. You could feel the care in every one, and the explanations of the course menu were super thorough.

Honestly, since it's a restaurant with jazz, I'd gone expecting more from the atmosphere. But wow, the food was far beyond what I expected!

Course starter plate at Flat Nine
Caviar starter from the Flat Nine course
Bite-sized starter at Flat Nine

It wasn't just pretty food: the flavor combinations were great and even the textures in the mouth were fun. I thought it could give pricier fine-dining restaurants a run for their money!

Bread and butter, ragu lasagna

The bread and butter served alongside were tasty too. Warm bread with butter was full of rich, nutty flavor! The ragu lasagna that followed was also really good; the rich, hearty ragu sauce was so appealing that I smeared plenty of bread through the leftover sauce.

Ragu lasagna and bread from the Flat Nine course

Can you just watch the show at Flat Nine without ordering food?

You don't have to eat at Flat Nine; you can come with just the performance fee and one drink per person! There was also a cocktail discount during happy hour, 3 PM–6 PM.

Fried dish from the Flat Nine course
Course dish served with sauce at Flat Nine

This dish had a great sauce and great fried bits too! And midway through the course, a palate cleanser came out, which let me enjoy the next main dish even more.

Palate cleanser midway through the Flat Nine course
Mid-course plate at Flat Nine
Whisky on the rocks and a signature cocktail at Flat Nine

I had a glass of Black Rye on the rocks, and my friend had a fresh, zesty signature cocktail. A drink in a place with a nice atmosphere just feels good.

Drinks and dishes on the table at Flat Nine

How does the Iberico steak taste at Flat Nine?

The highlight of the Flat Nine course was the main, the Iberico steak. Even though it was quite thick, it was cooked well, not tough but tender and full of rich flavor.

I was wowed by how it looked, a thick cut of steak, and it was juicy, with a true meaty flavor that comes through the more you chew. The sauce went well with the meat, and the onion and mushroom garnishes were all delicious too. Usually I leave some of the garnish when eating a main dish, but that day the onions and mushrooms were so good that I finished everything. The quality of the main raised my satisfaction with the food even more.

Main Iberico steak at Flat Nine
Iberico steak with onion and mushroom garnish
Live jazz trio performance at Flat Nine

Above all, I liked the timing of the dishes and the staff's service. It's not just a place to come for a show; it's a restaurant I'd want to return to for a proper course meal.

How was the jazz trio performance at Flat Nine?

While I was sipping whisky and cocktails, the live jazz trio began. Sitting in the center, I could see the players' expressions, their hand movements and how they played their instruments, all vividly.

Good food has to come with a good drink, right! While I was enjoying food and drinks under soft lighting, the show started before I knew it. The rhythm and the chemistry of the passionate three-piece jazz trio were wonderful. I could see the musicians' faces clearly, so I was totally focused✨️✨️

Do I recommend Flat Nine for a Gangnam Station date or anniversary?

If you're looking for a Gangnam Station date spot with a great atmosphere, or an anniversary or special weekend, I'd recommend Flat Nine. Next time I'd like to visit during an evening set. Thanks to Flat Nine, a special Gangnam weekend date was complete! ♡

Where it is

Flat Nine플랫나인

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

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