HamanakoLakesidePlaza

A spacious sauna wrapped in a bath illuminated by projection mapping and the breeze of Lake Okuhamana

Shizuoka Hamamatsu City

"Hamanako Lakeside Plaza" is a large members-only resort hotel in Hamamatsu, Shizuoka Prefecture, with stunning views of Lake Okuhamana. The hotel’s signature hot spring facility, "Mikkabi Onsen Manyo no Hana," is filled with an alkaline simple spring with a pH of 9.6 or higher, pumped from about 1,000 meters underground, and is beloved as a "beauty bath" that leaves the skin feeling silky and moisturized. At night, a Japan-first projection mapping display in the Tokai area illuminates the indoor bath, while the spacious, open sauna, deep cold plunge bath, and refreshing outdoor air bath in the lake breeze provide a blissful experience.

Hot Spring & Bath Information

Mikkabi Onsen Manyo no Hana

TypeNatural Hot Spring

A natural hot spring bath using the facility's own spring, "Mikkabi Onsen," which wells up from about 1,000 meters underground. This alkaline simple spring with a pH of 9.6 or higher (with water added, heated, and recirculated through filtration) has a smooth, silky texture and is also known as a "beauty bath." The facility features an open-air bath where the pleasant breeze from Lake Okuhamana flows through, as well as a reclining bath and a circulating bath with bubbling massage effects. At night, guests can enjoy an entertainment-style hot spring experience while soaking in the bath, watching a powerful projection mapping show that vividly colors the entire wall of the indoor bath (screening from 19:00-23:30).

Sauna

Dry sauna

90°C

Sauna TypeDry Sauna

Stove TypeConvection Stove (Sauna Stone)

Capacity10people

Men'sWomen's

A very spacious, open dry sauna. Mild yet substantial heat evenly envelops the entire body, encouraging deep refreshment for both body and mind. With a relaxed seating layout limited to about 10 seats, personal space is well secured, allowing you to work up a comfortable sweat without worrying about those around you.

Cold Bath

Cold Bath

17°C

Water QualityTap Water

Capacity3people

Men'sWomen's

A cool cold plunge bath with a proper depth, installed just outside the sauna room. The temperature is kept steady at around 17°C to 18°C, gently yet firmly tightening an overheated body in an instant. Its well-balanced coldness makes it ideal for lingering and enjoying the water quality for longer. After the cold plunge bath, you can relax in a deck chair in the outdoor area and experience the best totonou while being embraced by the refreshing breeze blowing in from Lake Hamana.

Business Hours

Monday
06:00〜00:00
Tuesday
06:00〜00:00
Wednesday
06:00〜00:00
Thursday
06:00〜00:00
Friday
06:00〜00:00
Saturday
06:00〜00:00
Sunday
06:00〜00:00
Holiday
06:00〜00:00
💡 [Large bath and sauna] 06:00-24:00 (last admission 23:30) *General day-use bathing for adults is 2,200 yen (bath towel and face towel included), and 1,100 yen for children. Member discounts available.

Closed Days: None

Address

431-1424 Shizuoka Prefecture, Hamamatsu City, Hamana Ward, Mikkabi-cho Shimoona 200

Hotel & RyokanOnsen & Spa Facilities (Super Sento, Sauna, Spa)

Gender Access

Gender Separated

🚫
Tattoo Policy
No Tattoos
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