Shinjuku Restaurant, Cuppage Plaza: Forty Years and Still Going

Aug 15, 2026/Elijah Lim/, /Last Updated Aug 14, 2026
The entrance to Shinjuku Japanese Restaurant at Cuppage Plaza, featuring a classic wooden slatted facade, an illuminated sign with Japanese characters, and a large visual poster displaying various lunch menu sets as a patron walks through the glass door.

The first thing I did was take off my shoes.

I hadn’t expected that. You climb the steps into Shinjuku Restaurant, and a staff member gestures, politely but clearly, toward the rack by the entrance. Shoes off. And something about that small act made me slow down before I’d even looked at the menu.

Cuppage Plaza is like that. Worn tiles, quiet corridors, doors that don’t announce themselves. Shinjuku has been sitting here at 5 Koek Road since 1985. Forty years in one building. That counts for something in Singapore.

Authentic Japanese Food in an Old-School Room

A close-up view of the wooden dining counter at Shinjuku Restaurant, cluttered authentically with sake bottles, condiments, and a Maneki-neko lucky cat figurine. A chef in a white uniform works in the kitchen behind the counter, beneath a wooden board displaying handwritten Japanese menu items.

Inside, this is a restaurant that stopped chasing trends a long time ago and decided it didn’t need to.

There’s a sushi bar off to one side, a few conventional tables, and those sunken izakaya seats where you fold your legs under and settle in. The atmosphere is warm, a little smoky from the grill, and genuinely lived-in. It gets loud when it’s full. I’ll be honest about that.

I visited on a Tuesday, just after noon, and it was calm. By the time I left, the room had filled with chopstick clatter and staff calling out orders. Not a quiet corner. But a living one. If you prefer things calmer, come early or contact them about availability before visiting on a Thursday, Friday, or Saturday.

Sashimi, Skewers, and Sweet Soy Sauce Worth Knowing About

A top-down view of a hearty Japanese feast spread across a light wooden table. The meal includes a bowl of golden katsudon, a savory sliced meat and rice bowl topped with a soft-boiled egg, crispy chicken nanban with tartar sauce, a plate of fresh sashimi, miso soup, and chopsticks.

I started with the sashimi moriawase, three kinds ($53.45). Thick cuts, cold, clean. The salmon had that soft give you hope for, and the maguro was firm and honest. Fresh seafood at this quality is what keeps diners coming back. If you’re exploring the area’s Japanese food scene more broadly, this guide is worth a read too.

Now, a fair note: the fish isn’t always flawless. One diner sent back tuna that wasn’t fresh, and the chef swapped it without fuss. Mine was good, but I’d still ask what came in fresh that day before ordering.

Then the katsudon. Crisp cutlet, egg barely set, rice underneath soaking up the sweet soy sauce. It’s not refined. It’s comfort food at its best, and it arrived fast and warm. If you love that kind of filling, satisfying Japanese cuisine, this is your dish.

I also tried the Tori Wafu Steak and Tougan Ankake lunch set. The chicken was tender, the simmered vegetables alongside it soft and made for eating with rice. Filling in the way that makes you sit back after. Recommended.

For friends who want to enjoy a spread, the Nanban chicken ($20.85) is awesome, dressed in a sweet-sour glaze with tartar. The skewers are worth ordering too, especially with a cold sake or whatever beverages you prefer from their drinks menu. The tempura held up well for me, though older reviews mention occasional misses with the prawns. The Japanese hot pot options and tofu dishes round out a menu with solid options for everyone at the table. Authentic Japanese Food Means Getting the Service Right Too

The staff were warm. Genuinely.

One of them reminded a table near me to take their umbrella on the way out. Service here leans friendly and attentive when the room has space to breathe. That kind of heart is hard to find.

But when it’s packed, things slow. Waits past fifteen minutes on busy lunches are not unheard of, and a table beside me was told upfront their food would take a while. I’d rather that honesty than a shrug. Just go in knowing peak hours test the kitchen and set your expectations accordingly.

Cuppage Plaza: Practical Details Before You Go

A low-angle, exterior shot of the Cuppage Plaza building, a multi-story white commercial complex with unique geometric architecture, bathed in the warm, golden light of the sun.

Shinjuku sits at 5 Koek Road, #01-01/02, Cuppage Plaza. Somerset MRT is about a five-minute walk, so it’s easy to find even if the plaza itself feels like stepping back a decade.

Lunch runs 11:45am to 2:30pm, dinner from 6pm to 11pm, daily. Weekends fill fast, so make reservations if you’re catching dinner on a Thursday, Friday, or Saturday. Check contact and availability early to avoid disappointment.

On the money side, expect around $33 with tax and service for a set lunch with tea. Good value for the quality and portion sizes. The restaurant holds 4.3 out of 5 across 533 Google reviews, which feels about right. Loved by many, not worshipped by all.

Would I Go Back?

The warm, inviting interior of Shinjuku Restaurant, showcasing a classic izakaya layout with a long, illuminated wooden sushi counter lined with dark chairs on the left, and cozy, traditional wooden booth seating on the right.

Yes. But I know what Shinjuku is now, and that matters.

It’s not perfect for a quiet romantic dinner, and the presentation isn’t chasing modern trends. It’s loud sometimes. The kitchen can lag.

What it is: authentic Japanese food in a room that still has heart. Come for a weekday lunch. Come with friends who’ll share the grill and the sake. Come if you love your Japanese cuisine unfussy and rooted.

I left full. Some places perform. This one just quietly keeps going. I’d pull up a chair at that sunken table again.

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