Caesar salad and today's pizza at Seongsu pizzeria Pizza Slice Seoul

In short

Pizza Slice Seoul is a Tokyo-born slice pizzeria on the basement floor at 159 Achasan-ro, near Seongsu Station in Seongdong, Seoul. A friend and I had one slice each of today's pizza (₩8,000) and the white Hawaiian (₩7,800), with a Caesar salad (₩6,000) and a Zero Coke (₩3,000) for a light meal. Pizza Slice Seoul sits on the quiet side away from the busy Seongsu strip, and its floor-to-ceiling window seats keep the basement from feeling closed in.

Two pizza slices and a Caesar salad on the table

Good to know

Address
Basement 1F, 159 Achasan-ro, Seongdong-gu, Seoul
Hours
11:00–20:00 (last order 19:30)
Today's pizza
₩8,000 (changes each time, so the price varies)
White Hawaiian slice
₩7,800
Caesar salad
₩6,000
Zero Coke
₩3,000
Facilities
Takeout available, WiFi, separate men's and women's restrooms, high chairs, group seating, waiting seats
Table clearing
Self-service
Price reference
₩8,000 ≈ $5.9 · ₩7,800 ≈ $5.8 · ₩6,000 ≈ $4.5 (2026-09-15)

as written by the visitor on Sep 3, 2026

Main photo of a slice pizza at Pizza Slice Seoul in Seongsu

Heard there was a hot pizza place in Seongsu, so I went with a friend to check it out !! Pizza Slice Seongsu 🍕

📍159 Achasan-ro, Basement 1F, Seongdong-gu, Seoul, South Korea ✔️11:00–20:00 / last order 19:30 Takeout available, WiFi, separate men's/women's restrooms, high chair available

Street around Pizza Slice Seoul on Achasan-ro

On the quiet side of Seongsu, away from the crowds

Seongsu has gotten so crowded lately that it drains my energy, but Pizza Slice Seongsu is on the opposite side from the busy main street, so it was nice and quiet ㅠㅠ I get so drained from the waiting lines and crowds everywhere I go, but visiting here I really liked it 🍕🍕🍕

Stairway entrance leading down to the basement floor at Pizza Slice Seoul

Trendy and hip from the entrance. Turns out it's Pizza Slice, famous as a hotspot in Tokyo. A pizza place straight from Tokyo, expecting good things ~ you go down a staircase to the basement level.

Wood and white toned table at Pizza Slice Seoul

A basement with a huge window — Pizza Slice Seoul's interior

The tables were stylish, I loved the interior so much I took tons of photos. The wood and white interior really worked for me.

Interior of the basement space with natural light coming in

Even though it's underground, natural light comes in well and the vibe was great. Takeout is available too, and a lot of customers were just grabbing a quick bite. Most of all, being able to enjoy one slice at a time is a real plus.

Large window at the basement-level restaurant

There's a window this big, so even though it's a basement it never feels stuffy at all!

The vibe is really great haha, the interior. It reminded me of old-school pizza place interiors from when I was a kid.

Group seating next to the big window

There's group seating too, so no worries if you come with a bunch of people.

Wait, this seat is so pretty too. It's underground, yet there's a huge window like this, no people walking by, and you can see the green trees — pure healing haha.

They also had a high chair available.

Display case of slice pizzas
Counter with various types of slice pizza laid out

Pizza Slice Seoul's menu and what we ordered

Wow, so many delicious-looking pizzas. There were quite a lot of types, so it was hard to decide which flavor to get.

Pizza types available at Pizza Slice Seoul
Menu board at Pizza Slice Seoul

With so many pizza types, it seemed like fun to pick and choose. Pizza plus a drink comes to around 10,000 won, so it also felt like great value — Pizza Slice! Since it's sold by the slice, you can try different flavors, which I really liked.

  • Cheese pizza
  • Pepperoni pizza
  • Mushroom pizza
  • Jalapeño cream cheese slice pizza
  • White Hawaiian slice
  • Homemade meatball slice, and more

Order menu Today's pizza ₩8,000 White Hawaiian slice ₩7,800 Zero Coke ₩3,000 Caesar salad ₩6,000

Today's pizza changes every day, so the price changes too ~

White-toned table seating

There were various types of tables, each with a different feel. We decided to eat here haha. Being all white tones, it seemed like it would photograph well too ~

Today's pizza and white Hawaiian, one slice each, plus Caesar salad

Two pizza slices and a Caesar salad on the table

The pizza came out warm and freshly heated. Caesar salad, and two pizza slices. We decided to eat light (?) so we each ordered one slice and also got a salad — the Caesar salad was so good.

A warm, freshly heated slice pizza

There are times when you want pizza but finishing a whole pie feels like too much — being able to each pick your own slice like this is really appealing!

Caesar salad topped with cheese

The Caesar salad had cheese grated generously on top. Eating pizza together with the salad felt satisfying and I got to eat more vegetables too, which was nice.

Table spread with pizza and salad together

Today's pizza, piled high with toppings and cheese

Today's pizza loaded with toppings and cheese
Close-up of a slice of today's pizza

Both my friend and I cut ours in half to enjoy it a bit longer lol

A slice pizza cut in half

On the table there was hot sauce, oregano, pepper and more to add on the side, so you could season it however you like.

Hot sauce, oregano and pepper on the table
Containers of condiments and spices

Cleanup is self-service!

Self-clearing station after finishing a meal

A Seongsu pizzeria that also works well for a date

The atmosphere was so nice it seemed like it would make a great date spot too, and the food was tasty — Pizza Slice Seongsu.

Photogenic atmosphere inside the restaurant

Photos come out great too hahaha, nice.

There's even a waiting area set up (meaning it's popular and there's often a wait..)

The restrooms were separated for men and women too, clean and nice.

Waiting area inside the restaurant

If you're looking for a hip pizza place in Seongsu, I recommend Pizza Slice.

Where it is

Pizza Slice Seoul피자 슬라이스 서울

159 Achasan-ro, Basement 1F, Seongdong-gu, Seoul, South Korea서울특별시 성동구 아차산로 159 지하1층

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