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Blue Base Senami

BLUE BASE SENAMI

Private sauna cottage facing the Sea of Japan at Senami Onsen

Lodging
Chubu·Niigata

Day Use

Yes

Bathing & Water

Outdoor BathYes

Open-air outdoor bath

SaunaYes

Sauna room of any kind

Cold BathYes

Cold water plunge bath, typically used after sauna

Bathing Arrangements

Room OnsenYes

Private onsen bath in guest rooms, for overnight guests only

Views

Sea

About

Blue Base Senami is a private sauna cottage in Senami Onsen, in Murakami. The cottage has its own sauna, a cold plunge, an open-air bath and rest chairs, and the Sea of Japan lies right in front. The bath indoors runs with hot spring water. Reviewers describe the cottage as new and clean, and say you can rent it on its own for a few hours of day use (higaeri nyuyoku, 日帰り入浴), so the sauna, cold plunge and chairs are yours alone.

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Onsen Oni

Last updated October 13, 2026