Hotels in Kosai
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Hotel Route Inn Hamanako
Hotel Route Inn Hamanako
3.0 star property
Kosai
8.0 out of 10, Very Good, (186)
8.0/10
Very Good
(186)
The price is CNY459
CNY459
CNY504 total
Jan 19 - Jan 20, 2026
Tabist Kosai Hamanako no Yado
Tabist Kosai Hamanako no Yado
2.0 star property
Kosai
7.0 out of 10, Good, (45)
7.0/10
Good
(45)
The price is CNY182
CNY182
CNY200 total
Dec 21 - Dec 22
Minshuku Takahashi Kashibuneten
Minshuku Takahashi Kashibuneten
2.5 star property
Nishi Ward
9.6 out of 10, Exceptional, (55)
9.6/10
Exceptional
(55)
The price is CNY422
CNY422
CNY464 total
Jan 4 - Jan 5, 2026
Grand Mercure Lake Hamana Resort & Spa
Grand Mercure Lake Hamana Resort & Spa
4.0 star property
Nishi Ward
8.0 out of 10, Very Good, (603)
8.0/10
Very Good
(603)
The price is CNY439
CNY439
CNY545 total
Jan 20 - Jan 21, 2026
villa vacances hamanako
villa vacances hamanako
5.0 star property
Nishi Ward
The price is CNY3,749
CNY3,749
CNY4,124 total
Dec 22 - Dec 23
Hotel Listel Hamanako
Hotel Listel Hamanako
3.0 star property
Kita Ward
6.0 out of 10, (18)
6.0/10
(18)
The price is CNY909
CNY909
CNY1,013 total
Dec 22 - Dec 23
Hoshino Resorts KAI Enshu
Hoshino Resorts KAI Enshu
4.0 star property
Nishi Ward
10.0 out of 10, Exceptional, (21)
10/10
Exceptional
(21)
The price is CNY3,043
CNY3,043
CNY3,696 total
Dec 22 - Dec 23
Hamanako Kanzanjionsen Hotel Kikusuitei
Hamanako Kanzanjionsen Hotel Kikusuitei
3.0 star property
Nishi Ward
7.4 out of 10, Good, (36)
7.4/10
Good
(36)
Hamanako Wan Wan Paradise Hotel
Hamanako Wan Wan Paradise Hotel
3.0 star property
Nishi Ward
8.4 out of 10, Very Good, (45)
8.4/10
Very Good
(45)
The price is CNY871
CNY871
CNY971 total
Dec 23 - Dec 24
Matsuichi
Matsuichi
2.5 star property
Nishi Ward
5.4 out of 10, (3)
5.4/10
(3)
The price is CNY568
CNY568
CNY625 total
Dec 23 - Dec 24
Ryokan Kinsui
Ryokan Kinsui
3.0 star property
Kita Ward
8.0 out of 10, Very Good, (1)
8.0/10
Very Good
(1)
The price is CNY2,678
CNY2,678
CNY2,946 total
Dec 21 - Dec 22
Hotel Villa Kuretake
Hotel Villa Kuretake
3.5 star property
Naka Ward
8.0 out of 10, Very Good, (110)
8.0/10
Very Good
(110)
The price is CNY391
CNY391
CNY473 total
Jan 15 - Jan 16, 2026
Grand Hotel Hamamatsu
Grand Hotel Hamamatsu
2.5 star property
Naka Ward
7.4 out of 10, Good, (33)
7.4/10
Good
(33)
The price is CNY443
CNY443
CNY488 total
Jan 19 - Jan 20, 2026
HOTEL SUI HAMAMATSU
HOTEL SUI HAMAMATSU
3.5 star property
Naka Ward
9.2 out of 10, Wonderful, (266)
9.2/10
Wonderful
(266)
Hamamatsu Hotel
Hamamatsu Hotel
3.5 star property
Naka Ward
8.2 out of 10, Very Good, (344)
8.2/10
Very Good
(344)
The price is CNY321
CNY321
CNY388 total
Dec 21 - Dec 22
Loisir Hotel Toyohashi
Loisir Hotel Toyohashi
3.5 star property
Toyohashi
8.6 out of 10, Excellent, (623)
8.6/10
Excellent
(623)
Richmond Hotel Hamamatsu
Richmond Hotel Hamamatsu
3.0 star property
Naka Ward
8.8 out of 10, Excellent, (606)
8.8/10
Excellent
(606)
Hotel Leon Hamamatsu
Hotel Leon Hamamatsu
3.0 star property
Naka Ward
8.4 out of 10, Very Good, (237)
8.4/10
Very Good
(237)
The price is CNY243
CNY243
CNY268 total
Dec 21 - Dec 22
Okadaya Bayside
Okadaya Bayside
3.0 star property
Toyohashi
7.2 out of 10, Good, (47)
7.2/10
Good
(47)
The price is CNY325
CNY325
CNY357 total
Jan 11 - Jan 12, 2026
Hotel Sorriso Hamamatsu
Hotel Sorriso Hamamatsu
3.0 star property
Naka Ward
8.4 out of 10, Very Good, (458)
8.4/10
Very Good
(458)
The price is CNY391
CNY391
CNY473 total
Jan 4 - Jan 5, 2026
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
Go beyond your typical stay in Kosai
Family friendly
When is the best time to visit Kosai?
When is the best time to visit Kosai?Our prices for hotels in Kosai are cheapest in May
When is the best time to visit Kosai?
When is the best time to visit Kosai?
Our prices for hotels in Kosai are cheapest in May
Price trends for hotels in Kosai
Pricing is based on two traveler single night rates
Currently viewing crowd sizes and weather for December.
Typical weather for Kosai
December
Low crowds
High 11°C / low 5°C. Sunny most days.
View properties in December 11°
December, Low crowds, average high temperature 11 degrees Celsius, average low temperature 5 degrees Celsius. Sunny most days.
5°
9°
January, High crowds, average high temperature 9 degrees Celsius, average low temperature 3 degrees Celsius. Sunny most days.
3°
10°
February, Low crowds, average high temperature 10 degrees Celsius, average low temperature 3 degrees Celsius. Sunny most days.
3°
14°
March, High crowds, average high temperature 14 degrees Celsius, average low temperature 6 degrees Celsius. Sunny most days.
6°
18°
April, Low crowds, average high temperature 18 degrees Celsius, average low temperature 10 degrees Celsius. Sunny most days.
10°
22°
May, High crowds, average high temperature 22 degrees Celsius, average low temperature 15 degrees Celsius. Partly sunny.
15°
25°
June, Moderate crowds, average high temperature 25 degrees Celsius, average low temperature 19 degrees Celsius. Partly sunny.
19°
28°
July, Moderate crowds, average high temperature 28 degrees Celsius, average low temperature 23 degrees Celsius. Rainy most days.
23°
30°
August, Moderate crowds, average high temperature 30 degrees Celsius, average low temperature 25 degrees Celsius. Partly sunny.
25°
27°
September, Moderate crowds, average high temperature 27 degrees Celsius, average low temperature 22 degrees Celsius. Partly sunny.
22°
22°
October, High crowds, average high temperature 22 degrees Celsius, average low temperature 16 degrees Celsius. Partly sunny.
16°
17°
November, Low crowds, average high temperature 17 degrees Celsius, average low temperature 11 degrees Celsius. Sunny most days.
11°
Monthly weather averages (˚C)
Top landmarks in Kosai
Learn more about Kosai
Kosai is well-known for its attractions such as Arai Beach and Lake Hamana.
Check out reviews of Kosai hotels guests love
Richmond Hotel Hamamatsu
10/10 Excellent
"The staff's response was good"
HOTEL SUI HAMAMATSU
10/10 Excellent
"breakfast was curated of local food, absolutely loved it. "
Hotel Route Inn Hamanako
8/10 Good
"Nothing any defect, but just all facilities could be aged. If possible, and if I can suggest to you that it might be better some update."
Hotel Associa Toyohashi
10/10 Excellent
"Good"
Centurion Hotel Hamamatsu
10/10 Excellent
"Good"
EN HOTEL Hamamatsu
10/10 Excellent
"Good"
Hotel Route Inn Shinshiro
10/10 Excellent
"comfortable, clean and convenient, excellent staff attention"
Comfort Hotel Hamamatsu
10/10 Excellent
"Excellent location just a block behind the train/bus station. Free buffet breakfast that was actually good and varied each day. Free drinks throughout the rest of the day, including filtered water and hot drink machine. Downstairs common area is relaxing and well maintained.
Room was large for Japan. You could comfortably open suitcases and still have room to walk around. Beds are also larger than other hotels. We booked 2 twin beds and they were also similar to a double size. Pillows are very flat though. "
Grand Mercure Lake Hamana Resort & Spa
10/10 Excellent
"Great location!"
Frequently asked questions
How much does a hotel room cost in Kosai?
You can discover great hotels in Kosai with properties to suit all budgets and needs. If you're after an affordable hotel in Kosai that meets all of your requirements, set your filters and then sort the results by "Price: low to high".
How can I find deals and earn rewards at Kosai hotels?
Discover great deals on Kosai hotel stays with Hotels.com. You can also look at hotel prices mid-week or during the low season to find off-peak deals. If it's a spontaneous trip, check out our last-minute deals on Kosai hotels.
Can I book Kosai hotels with free cancellation?
It's easy to book a refundable Kosai hotel on Hotels.com. Simply filter hotels by "Property cancellation options" and select "Fully refundable property". The majority of hotels offer free cancellation, so you can receive a refund if you need to cancel. Some hotels do require cancelling more than 24 hours before check-in, so double-check your booking beforehand.
What are some of the best Kosai hotels with free parking?
If you're driving, a great Kosai hotel with free parking is a bonus. Our travelers' favorites include:
- Family Lodge Hatagoya Hamanako: A motel with an average guest rating of 8.4 out of 10
- Hotel Route Inn Hamanako: A hotel with an average guest rating of 8
What are some popular hotels in central Kosai?
If you're looking for hotels in central Kosai, check out Family Lodge Hatagoya Hamanako and Hamanako Resort & Spa The Ocean. Travelers love Family Lodge Hatagoya Hamanako for its location, as well as the free parking and free WiFi this motel offers. Hamanako Resort & Spa The Ocean is another popular central hotel with a full-service spa and a bar/lounge, plus pillow menus in the guestrooms. Nishi Ward is a central neighborhood for your Kosai vacation.
What accommodations do travelers recommend in Kosai?
Hotel Route Inn Hamanako is a property that our guests really like.
Can I book refundable hotels in Kosai?
If you need the flexibility to change your travel plans to Kosai, most properties offer refundable* rates you can book. You can see these accommodations by searching our site and using the "fully refundable" filter to narrow down the results.
What will the weather in Kosai be like during my visit?
August and July are typically the warmest months in Kosai when the average temp is 76°F. January and February are the coldest months when the average temperature is 46°F. July and June are the months with the most rain.
Why should I book my Kosai accommodation with Hotels.com?
There are lots of reasons to book your Kosai trip with us: our free cancellations on selected hotels gives you flexibility, and with One Key™, our rewards program, you will be able to earn and use OneKeyCash™* on all eligible bookings such as hotels, car rentals, flights, vacation rentals and more on Hotels.com, Expedia and Vrbo.