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- Hamamatsu · Lake Hamana · Tenryu Vacation rental
- Hamanako Seifuso
By the shores of Lake Hamana A gathering accommodation: Bringing people, food, and sounds together
Bringing the "scenery of the past" closer to the "scenery of today" We are Seifuso, 4th generation, opening in August 2024 Located along the shores of Japan's largest brackish lake, an area where seawater and freshwater "meet," adjacent to Lake Hamana. A historic accommodation that has welcomed guests since the Edo period, offering abundant seafood delicacies and a unique tranquil sandy beach on Enshu Nada that resonates with sound. Drawing in the indescribable charm of Lake Hamana
Excellent service, excellent meals, and excellent baths & sauna.This was our first trip with our dog, and we made wonderful memories. We’d like to come again in summer.It was an outstanding Accommodation.
Seiyo 2/5/2026We visited in July with a friend's family! The entrance gave us a nostalgic feeling, and once inside, the modern and spacious atmosphere made us feel amazing! Right in front of the accommodation is Lake Hamana, which felt like having our own private beach! After swimming and playing in the lake, we could immediately enjoy the large and beautiful bath at the accommodation, so there was no inconvenience from beach activities at all! After playing by the lake, the staff at the accommodation prepared dinner for us. The food here is absolutely delicious! You can enjoy plenty of local ingredients from the Lake Hamana area. The staff grilled ingredients over charcoal and served them to us—it was such a delightful experience! There was also plenty of delicious rice cooked in an earthen pot, so we made rice balls to enjoy for breakfast the next morning. On the second floor, there are three bedrooms that were spacious and clean. The bedding and pajamas were incredibly comfortable—I was truly impressed! It was my first time sleeping so well on bedding provided by an accommodation that I even asked about their brand name from one of their staff members and ended up purchasing it myself!Since dogs are allowed here as well, we plan to visit again next time with another friend's family who has a dog!
k.y.t.s.m. 10/28/2025
Facilities and Services
See All- Pet-friendly
| IN | 15:00~19:00 |
|---|---|
| OUT | 11:00 |
| Number of rooms | 1 room |
| Pet | Permitted |
| Your child | Permitted |
Photo
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Introduction of the Accommodation




A nostalgic bathhouse where people from all walks of life gather, offering a space to relax both body and mind. Sauna for up to 5 people: - Adjustable temperature - Löyly available In front of the sauna, there is a deep cold plunge pool with a chiller. Open the bathroom window and unwind on the lakeside deck with fresh outdoor air.





Seifuso is located right in front of Lake Hamana, with a sandy beach that feels like a private retreat. Directly ahead, you'll see the Bentenjima Red Torii Gate, and to the right lies the Pacific Ocean and Imagireguchi of Lake Hamana. The nearby Shirasuka area is a popular surfing spot, accessible on foot. There is also an outdoor shower available in the lakeside garden.

Spend time around a wood-burning stove
The 128-square-meter living room features a wood-burning stove, offering the cozy warmth of a fire. *Additional fee: ¥1,000 per bundle of firewood (tax included).
Facilities and Equipment of Accommodation
- The room
- Hot Springs & Baths
- Surroundings & Others
- Meal
Basic Information
| Card information | VISA / MASTER / JCB / AMEX / DINERS / UnionPay |
|---|---|
| Pets | Permitted - Cost: 4,400 yen per pet/night
- Size: Accepts dogs from extra small to large breeds
- Number of pets: Up to 3 pets per room |
| Breakfast | There is no information about breakfast. |
| Your child | You can stay. |
| Room service | Not available |
| Common amenities |
|
| Facilities and Features |
|
| Esthetic Massage | None |
| Fitness gym | None |
| Public Bath |
|
| Sauna | Available |
| Hot stone spa | None |
Reviews
- Rooms & Amenities4.92
- Facility4.85
- Hospitality & Service4.92
- Meals5.00
- Onsen & Bath4.92
- Satisfaction4.85
*Reviews that have been translated from Japanese.*
*Showing only reviews from 一休.com (Japanese) and Yahoo!トラベル.*
Access Information
Shizuoka Prefecture3288-105 Arai, Araicho, Kosai City
TEL:+81-53-523-7008
By Car
Approximately 2 minutes from Araibenten IC
Approximately 40 minutes from Hamamatsu Nishi IC
By Train
5 minutes by taxi from JR Bentenjima Station or Arai-machi Station
- Parking Information
- Fee
- Free for guests
- Parking time
- ---
- Parking space
- No restrictions
- Number of parking spaces
- 10 cars available outdoor
- Valet service
- Unavailable
- Pickup and drop-off information
- Unavailable
Frequently Asked Questions
What kind of facilities and features are available?
There are the following facilities and features. Entire building rental・With kitchen・Multiple bedrooms・Parking available・Meal service available・Outside food allowed・Pet-friendly
I would like to know the access information.
By Car Approximately 2 minutes from Araibenten IC Approximately 40 minutes from Hamamatsu Nishi IC By Train 5 minutes by taxi from JR Bentenjima Station or Arai-machi Station
Is parking available?
・Fee: Free for guests ・Parking space: Length --- Vehicle width --- Vehicle height --- ・Number of parking spaces: 10 cars ・Valet Service: Unavailable
Is an internet connection available?
Connection is possible. ・Wi-Fi is available. For more details, please refer to the room and plan information.
Is there a sauna?
Yes, there is.
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