Riverside Hot Springs Inn & Spa
OpenOpen seasons
Conditions checked November 2026
- Reservations
- Soaking rooms: 30-minute sessions, registered in advance.
- Accommodations
- Adults-only boutique hotel; outdoor tub available for overnight guests.
Plan Your Visit
Built in 1914, the Riverside Hot Springs Inn features three indoor soaking pools and one outdoor soaking tub which are available to all overnight guests.
East Portneuf Street, Lava Hot Springs
Riverside Inn and Hot Springs Facilities
18 room hotel, meeting and special event facilities, 3 indoor and 1 outdoor hot mineral spring soaking facilities, massage therapy and restaurant/lounge.
The three indoor tubs are private soaking rooms, booked in 30-minute sessions included with an overnight stay. The inn is an adults-only property. The Portneuf Grille & Lounge serves dinner daily 5pm–9pm (bar 4pm–9pm), and the lobby’s Café A’more serves a continental breakfast.
Riverside Inn Rates
Check availability, book online and view current specials
Overnight Accommodations
There is an 18 room hotel onsite. Hot springs fed pools at Riverside Inn are available to overnight guests.
Driving Directions
255 East Portneuf Street, Lava Hot Springs, ID 83246 — Phone: (208) 776-5504.
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Frequently Asked Questions
How does soaking work at Riverside Inn?
Soaking is in three indoor private soaking rooms, in 30-minute sessions registered in advance. The mineral water is tempered down to 102–106 °F from a source up to 112 °F. An outdoor tub is available for overnight guests.
Is Riverside Inn adults-only?
Yes, it is an adult-only boutique hotel.
What are the restaurant hours?
The Portneuf Grille & Lounge serves dinner daily from 5:00 PM to 9:00 PM. The lounge opens at 4:00 PM and stays open past 9:00 PM on Friday and Saturday nights.
Is breakfast included?
Café A'more, in the lobby, serves a continental breakfast with fresh baked goods.
Is there a spa?
Massage therapy is available by advance appointment only; reserve spa appointments at least 24 hours in advance.
When was the inn built?
The Riverside Inn was built in 1914.
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