Sagawa Ryokan

Sagawa Ryokan sits in Yoro Keikoku, where forested slopes and waterfalls draw travellers into Chiba’s interior. Its 12 tatami-centred rooms are simple and traditional, giving the property the feel of a country inn rather than a coastal resort.

The large communal bath uses the area’s distinctive black water, rich in sodium bicarbonate, chloride and iodine. Its deep coffee colour and smooth feel make the spring memorable even within an uncomplicated indoor bathhouse.

Meals look to the mountains and farms of Oku-Boso, using local vegetables and seasonal ingredients in hearty Japanese dishes. Sagawa suits travellers who want to pair valley walks with unusual mineral water and a straightforward tatami stay. Its strength lies in regional coherence, while the rooms and public spaces remain modest.