Hannam-dong izakaya with private rooms: crab nabe at OSA Hannam

In short

OSA Hannam is an izakaya with a terrace and private rooms on Hannamdaero 20-gil in Yongsan, Seoul. The order was spicy seafood crab nabe (hot pot), raw tuna prosciutto and OSA futomaki (thick sushi roll), paired with a Suntory highball and a bokbunja (Korean black raspberry) highball, and all three dishes delivered. With terrace seats or a second-floor private room to choose from, OSA Hannam works for anything from a date to a company dinner.

Exterior of OSA Hannam, an izakaya in Hannam-dong

Good to know

Location
61-1 Hannamdaero 20-gil, Yongsan-gu, Seoul
Reservations
Naver Place
Parking
Parking and valet available, right in front of the restaurant
Seating
Terrace (including tented seats), second-floor private room, indoor tables
What we ordered
Spicy seafood crab nabe, raw tuna prosciutto, OSA futomaki (half roll), Suntory highball, bokbunja highball

as written by the visitor on Sep 15, 2026

Today I'm writing about my visit to OSA Hannam, an izakaya in Hannam-dong. It has a terrace and private rooms so it's great for get-togethers, and everything I ate this time was so impressively good I wanted to record it here haha.

OSA Hannam has so many delicious menu items, but I'll mainly introduce what I ordered — raw tuna prosciutto, a hefty futomaki, and more.

Where is OSA Hannam, and is there parking?

OSA Hannam is located at 61-1 Hannamdaero 20-gil, Yongsan-gu, Seoul, South Korea. You can book through Naver Place, and both parking and valet are available right in front, which was convenient.

Exterior of OSA Hannam, an izakaya in Hannam-dong

Terrace on a nice day, private room for a group

OSA Hannam is an izakaya with both a terrace and private rooms. As you can see in the photo, the outdoor space is open, so on a nice day like this one I'd recommend the terrace 🌿 It's a completely different mood from eating indoors!

OSA Hannam's open-air terrace seating
Tented terrace seating at OSA Hannam

There's also a tented section on the terrace, so you can still enjoy the atmosphere even on chillier days. If you have a preferred seat, be sure to check room or terrace availability when you book.

What to order at OSA Hannam

That day at OSA Hannam we ordered the spicy seafood crab nabe, raw tuna prosciutto, OSA futomaki, plus a Suntory highball and bokbunja (black raspberry) highball. All of these are best-seller items. If you look at the menu you'll see it's packed with delicious options! Personally I'd recommend skipping the familiar bar snacks and going for something a bit different. Let me introduce them one by one!

Two glasses: Suntory highball and reddish bokbunja highball

Suntory highball and bokbunja highball

We ordered two kinds of highball. The Suntory glass and the reddish bokbunja highball you see in the photo haha — placed side by side the colors are pretty too. And the bokbunja highball, surprisingly, was so good I have to recommend it!

The main dishes at OSA Hannam

Main dishes set on the table at OSA Hannam

Raw tuna prosciutto: an odd pairing that works beautifully

OSA Hannam's raw tuna prosciutto is raw tuna with truffle sauce, wrapped in prosciutto.

A plate of raw tuna prosciutto wrapped in prosciutto
Close-up of raw tuna prosciutto topped with truffle sauce

Tuna and prosciutto together? At first it seemed like an odd pairing, but once I tried it, it worked incredibly well!! I kept marveling at how anyone thought up this dish. It's a completely different experience from eating either ingredient alone, so the combination itself stuck with me. Of everything we ordered that day, this was the most memorable unexpected pairing!

OSA futomaki: look at the size of that end piece

We only ordered half a roll of OSA futomaki but it was still completely filling. You can tell the size just from the photo, right? It was so packed with filling that the cross-section caught my eye immediately.

Half roll of OSA futomaki packed with filling
Cross-section of futomaki with sashimi and fried shrimp
Large end piece of OSA futomaki

It's genuinely huge in person haha. Several types of thick-cut sashimi, plus fried shrimp — the owner is clearly generous with portions. I split the end piece into about three bites just to get through it. That's how big and packed it felt! It wasn't just big for the sake of it either — the ingredients worked well together, so the taste held up too.

Spicy seafood crab nabe: big portion, excellent broth

The spicy seafood crab nabe surprised me with its portion the moment it arrived. As in the photo, the pot is piled high with vegetables and crab.

Spicy seafood crab nabe piled high with crab and vegetables
Pot of spicy crab nabe broth boiling

It wasn't just a piece or two of crab — there looked to be three or more whole crabs in there. Since it's crab season right now, the meat was packed full too, which made picking it apart genuinely fun.

And the broth was truly spicy and delicious. It has that familiar-yet-addictive heat that's hard for a Korean palate to resist! It's not just a good broth either — the crab itself is delicious too, which raises the satisfaction even more!! If you like a warm, spicy soup dish with drinks, I recommend this one!

How the OSA Hannam terrace feels after sunset

OSA Hannam's terrace lit up in the evening

OSA Hannam's terrace changes mood entirely once evening falls. During the day it's all sky and open air, but in the evening the lights among the trees and the warm glow give it a whole different feel. So on a nice-weather day like this, I'd really recommend the terrace seats. It'd also make a great evening date spot in Hannam-dong haha.

Inside the second-floor private room

OSA Hannam has private room seating on the second floor. If you'd like to enjoy the evening quietly in a room, it's worth confirming availability when you book.

Private room seating on OSA Hannam's second floor
Table setting in OSA Hannam's second-floor room
Interior atmosphere of OSA Hannam's second-floor room
Indoor seating and lighting on OSA Hannam's second floor

Who should book OSA Hannam?

I liked that OSA Hannam lets you choose between the terrace and a room depending on the occasion. A date or blind date where you want to set the mood, a dinner with friends over good snacks, a company dinner or business meeting where you want privacy in a room, or even a birthday party.

Depending on your taste, here's how I'd pick the menu.

  • Spicy, generous soup dish → spicy seafood crab nabe
  • Something unusual and upscale → raw tuna prosciutto
  • A big, filling dish → OSA futomaki

I enjoyed all three dishes I introduced, and I think the crab meat with its spicy broth, and the tuna wrapped in prosciutto, will especially stay in my memory for a long time. If you're looking for a good restaurant in Hannam-dong or a bar with a private room, hope this helps depending on your occasion :)

Where it is

OSA Hannam오사 한남

61-1 Hannamdaero 20-gil, Yongsan-gu, Seoul, South Korea서울특별시 용산구 한남대로20길 61-1

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