Unwind in the hot springs and sauna, then slowly savor Niigata’s local sake.
With just nine rooms, this intimate inn is designed entirely for a deep, restful sleep.
Nestled in the mountains of Matsunoyama Onsen, "Ponshu Hotel Suimu" opened in the spring of 2025. It is a hot spring inn that prioritizes "recharging" over luxury. Here, you will find one of Japan’s three major medicinal hot springs, a sauna crafted from Uonuma cedar, and around 30 varieties of local Niigata sake curated by a sake master. It is a quiet sanctuary with room to breathe, designed for those who want to forget daily life and simply rest.
In May 2025, the mountain valleys of Tokamachi City, Niigata Prefecture welcomed their first new lodging opening in nearly half a century. Ponshu Hotel Suimu is a casual, 9 room hot spring inn created by renovating a defunct traditional ryokan in the historic Matsunoyama Onsen district. The project was spearheaded by Yuichi Yamagishi, an expert sommelier and master sake steward (sakasho) who also operates the nearby Sake no Yado Tamakiya and Hotel Kamosu mori. Designed entirely around the rich culture of Niigata’s regional sake, this unique hotel centers on a simple yet inviting concept: “Drink, unwind, and realign.”
Here, guests can warm up in legendary hot spring waters, work up a sweat in a sauna filled with the rich aroma of local Uonuma cedar, and leisurely sample exceptional Niigata sake curated by a master sake steward before drifting off into a deep, peaceful sleep. The name Suimu (meaning “sleeping dream”) reflects the inn’s hope that guests can gently relax both mind and body, much like the soft, hazy dreams experienced just before falling into a profound slumber. Rather than focusing on grand luxury, Suimu invites you to enjoy empty, unhurried time. Awaiting visitors is an experience found nowhere else, bringing together Matsunoyama’s famous healing waters, exceptional Japanese sake, rustic countryside cuisine, and an aromatic local cedar sauna.
A classy evening lounge
The bar and dining area features a striking dark tone counter that creates a beautiful contrast, setting the perfect mood for a relaxed evening. It is an unpretentious, sophisticated space where you can casually enjoy a post sauna drink and light snacks in a comfortable setting.
Dining
The dining experience here embraces a refreshing, relaxed sense of freedom. The highlight of the dinner included is the Satoyama Temaki Sushi, a playful meal where guests roll their own sushi using fresh, seasonal local ingredients. Combining vinegared rice made from premium Uonuma Shiozawa Koshihikari rice and red vinegar with a colorful variety of treasures from both the sea and the nearby mountains, this dish naturally sparks lively table conversation. Depending on your booking plan, the kitchen also serves satisfying “sauna meals” (sameshi), such as a flavorful mapo tofu bowl made with regional Tsunan pork, perfect for recharging after a sauna session.
The next morning, guests are treated to a wholesome Satoyama Breakfast focused on fermented foods and fresh local vegetables. Accompanied by perfectly cooked Uonuma Shiozawa Koshihikari rice, it features a gentle, body friendly menu. The absolute standout is the Miso Soup Bar, where you can select your favorite local miso from multiple varieties and add your choice of ingredients and condiments to craft a personalized bowl. This comforting, hands on experience brings a gentle warmth to your morning routine.
For an extra drink and light snacks after dinner, the first floor Bar & Dining area provides an unpretentious, laid back atmosphere. Additionally, the hotel serves a signature treat that has quickly become popular even with non hotel guests: a striking soft serve ice cream nestled in a jet black charcoal cone. Inspired by Matsunoyama Onsen’s traditional winter festival, Muko-nage Sumi-nuri (Groom Throwing and Ash Smearing), the treat comes in a classic rich milk flavor as well as a sophisticated, rum infused version for adults. Depending on the season, it is served with a vibrant sauce made from Niigata’s sweet Echigohime strawberries, making it a must try stop while strolling through the hot spring town.
Dining
Dinner
Enjoy Satoyama Hand-Roll Sushi made with premium red-vinegared Uonuma Shiozawa Koshihikari rice and a variety of local ingredients from both land and sea. Choosing from the beautifully arranged small dishes to create your own unique rolls naturally brings fun conversation to the table.
Onsen
Matsunoyama Onsen is highly regarded as one of Japan’s Three Great Medicinal Hot Springs, alongside Kusatsu and Arima. Its source is “fossil seawater,” ancient ocean water trapped deep within geological strata approximately 12 million years ago. This highly concentrated chloride spring is famous for its exceptional heat retention, keeping the body thoroughly warm and cozy long after stepping out of the bath. Guests can fully immerse themselves in this historic healing water, long loved as a traditional therapeutic bathhouse destination, while surrounded by rich natural scenery.
Furthermore, Ponshu Hotel Suimu has introduced the very first sauna to the Matsunoyama Onsen street area. The sauna room is constructed using generous amounts of local Uonuma cedar; opening the door releases a soft, calming forest fragrance. The room is equipped for self inflicted steam (self-loyly), allowing guests to easily adjust the perceived temperature to their liking. Warming up in the mineral rich hot springs, breaking a sweat in the aromatic sauna, and cooling down in the cold plunge pool offers a golden wellness routine that even beginners can easily enjoy.
The hotel also accommodates day trippers with dedicated day use bathing options and private reservations for the hot springs and sauna, making it an excellent stop during a sightseeing trip around Tokamachi. Day use entry is 1,500 yen per person (tax included, face and bath towels provided). Private plans accommodate up to six guests and include post bath drinks (advance reservation required).
Bath
Matsunoyama Onsen, one of Japan’s top three medicinal hot springs
Matsunoyama Onsen is one of Japan’s top three medicinal hot springs. Its high-salinity "fossil seawater," originating from a 12-million-year-old stratum, keeps you warm long after you step out. Guests can unwind and enjoy the soothing warmth in the quiet, steamy bathhouse.
Rooms
With a total of just nine guest rooms, the small scale property ensures a quiet, relaxing environment where you can unwind at your own pace. Guests can choose from three distinct room layouts to fit their travel style:
Yuttari Hirohiro Twin: Ideal for travelers who prefer extra space to spread out and relax.
Hodoyoi Twin: A well balanced option providing standard comfort and utility.
Okomori King: Perfect for couples or solo travelers looking for a cozy, tucked away sanctuary.
Despite the inn’s casual and approachable vibe, the bedding setup is highly professional, featuring premium Simmons mattresses and Tempur pillows to maximize the quality of your sleep. While the interior design is kept clean, simple, and chic, playful details are scattered throughout, such as room keys shaped like full sized sake bottles and charming small goods featuring the hotel’s original character mascots.
After soothing your body in the hot springs and sauna and sipping fine local sake, you can transition seamlessly into a restful night’s sleep, drifting away into a peaceful state just as the inn’s name promises. To support environmental sustainability, rooms do not come stocked with disposable single use amenities, and the property operates on a primarily cashless payment system, providing a light, modern, and eco-friendly stay.
Room
A minimalist space designed for deep sleep
This crisp white room opens up to beautiful winter views right outside the window. High-quality Simmons mattresses and Tempur pillows ensure a deep, restful sleep after a day of soaking and sauna. The minimalist design creates a truly calm and peaceful escape.
Special Experiences
The crown jewel of this hotel is the exclusive, guest only Sake Tasting Lounge. Because the owner, Yuichi Yamagishi, is a certified master sake steward and professional sommelier, guests have access to a carefully curated lineup of Niigata’s finest regional sake, available to taste and compare freely throughout their stay. The specific selection changes depending on the season, but the lounge keeps roughly 30 unique labels on hand at all times. Guests can sample small pours at their own pace or hunt for their new favorite bottle. For a truly luxurious experience, you are welcome to bring a glass back to the quiet comfort of your private room to savor it in solitude.
You do not need to be a sake connoisseur to enjoy this space. Upon arrival, you are welcomed with an approachable, vibrant welcome cocktail made by blending the hotel’s original craft sake, Kamosu mori, with sweet elderflower and fresh lemon. Even for those who rarely drink alcohol but are curious to try small amounts, the inviting atmosphere naturally opens the door to the beautiful world of Japanese sake.
Realigning your body through hot springs and saunas, tasting Niigata’s premium sake at your own leisure, and indulging in rustic, countryside flavors will leave you thoroughly refreshed. By the end of your stay, the guiding philosophy of “drink, unwind, and realign” will be deeply felt. This is a highly recommended getaway for anyone looking to step away from daily routines to restore their well-being, or for travelers who want to make Niigata’s rich sake culture the centerpiece of their journey. such as sowing seeds and harvesting at the adjacent Uda Mahoroba Herb Garden. Touching the soil and feeling the power of plants firsthand serves as the ultimate refreshment.
The nature tour takes you on an early morning walk through the crisp air with a guide to explore the surrounding nature, shrines, and fields. Engaging with the wisdom of ancestors who lived by reading nature, along with the stories of local plants, brings a quiet awareness that is impossible to find in the city.
During the firefly season, a firefly guiding tour takes place. After dinner, guests stroll through the countryside night where there are no streetlights. The sight of the fireflies, looking almost as if stars are raining down, is completely captivating.
For deep relaxation, you can receive an oil treatment using chemical-free herbs and essential oils sourced right in Uda. Depending on the weather, outdoor treatments are also available, making for an extraordinary experience as you surrender yourself entirely to nature.
With yoga sessions and cycling tours through the countryside on E-bikes also available, the menu is fully equipped to align your mind and body from multiple angles.
A place where you can experience a medicinal herb retreat while living as one with nature, that is the true charm of Uda Yakuto no Yado Yatakiya.
Welcome drink
A welcome sake cocktail
Upon check-in, guests are welcomed with a vibrant cocktail made from our original sake, Kamosu Mori, blended with elderflower and lemon. The delicate color in the glass sets a beautiful tone for a relaxing, refreshing stay ahead.
Plan List
Plans
Standard Plan – Breakfast & Dinner Included (Ponshu Hotel Suimu)
From the Tokyo Area: Take the Tomei Expressway and the Higashi-Meihan Expressway, then exit at the Hari Interchange on the Meihan National Highway. From there, it is about 30 minutes via National Route 369.
From the Kansai Area: Take the Hanshin Expressway or the Kinki Expressway, connect to the Nishi-Meihan Expressway, and exit at the Hari Interchange on the Meihan National Highway. From there, it is about 30 minutes via National Route 369.
Public transportation
From the Tokyo Area: Take the Tokaido Shinkansen to Kyoto Station or Shin-Osaka Station. Transfer to the Kintetsu Osaka Line and get off at Haibara Station. Board the Nara Kotsu Oku-Uda Wakuwaku Bus, get off at the Yataki bus stop, and walk for about 20 minutes.
From the Kansai Area: Take the Kintetsu Osaka Line and get off at Haibara Station. Board the Nara Kotsu Oku-Uda Wakuwaku Bus, get off at the Yataki bus stop, and walk for about 20 minutes.
Weakly alkaline, chloride, and sodium-calcium chloride spring.
Sauna
A cedar-scented sauna.
Facilities & Features
○Hot Spring
×Free Flowing Hot Spring
○Public Bath
○Private Bath
×Open Air Bath
×Sauna
○Stone Sauna
○Close to Station by Foot
○Close to a Convenience Store by Foot
○Free Parking
○Free Shuttle Service
×Barrier Free Access
○Western-Style Room Available
○Room with Private Toilet Available
Common Amenities
○Hair Dryer
○Shampoo and Conditioner
○Body Soap
△Toothbrush and Toothpaste
○Bath Towels
△Yukata
×Hair Brush
×Face Wash
×Skin Lotion
×Shaving Razor
×Shaving Cream
○TV
×Washing Machine
×Drying Machine
Frequently Asked Questions
Is there a day-trip hot spring option?+
Yes, we do. Visitors can enjoy Matsunoyama Onsen for 1,500 yen per person, which includes both a hand towel and a bath towel. No reservations are required, so please feel free to walk in. (Open from 1:00 PM to 5:30 PM for final admission).
Is there a pick up service?+
Yes, we do. We offer one scheduled shuttle service per day to and from Matsudai Station on the Hokuetsu Express Hokuhoku Line. The pickup from the station is at 3:30 PM, and the departure from the ryokan the next morning is at 11:05 AM.