誠の湯
(まことのゆ)
Grigorii ...
A sento in ryokan décor (actually it is a ryokan, but higaeri is available). The water feels ordinary, though they say the baths are lined with lava stone from Mt. Fuji. The ryokan itself is done in traditional style and is pleasant overall, but purely as a higaeri onsen at a thousand yen, it's not worth it.