The Historic Riverside Hot Springs Inn

Comfy, Cozy & Quaint

Onsite Hot Mineral Springs & Massage Therapy

Selection of Pacific Northwest Wines

Filet Mignon at the Portneuf Grille & Lounge

Riverside Wedding

A Culinary Experience at the Portneuf Grille & Lounge. Reservations Required

Lava Hot Springs Wedding at the Riverside Inn

Quiet & Cozy Portneuf Lounge

Lobby for coffee, cocktails, desserts and socializing with friends.

Book online and check availability at the Riverside Hot Springs Inn!

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Meeting & Event Space for up to 25 people. Discover our affordable Complete Meeting Packages
Live dinner music every Thursday night from 6-9pm. View Entertainment
Cioppino Fridays! Great fish & seafood Mediterranean style stew - Friday nights only while it lasts!
Complimentary Continental Breakfast every morning!
Take advantage of our Package Soak & Spa Deals! View Special Offers
Join us for Happy Hour Nightly with $2 Tacos & Drink Specials - Tuesdays 5-6:30pm!
Find out why we're called The Honeymoon Hotel with our Romance Packages. View Romance Packages
Midweek couples 1 hr massage. $100 per couple for hotel guests only added on to your room! 36 hr notice

Portneuf Grille & Lounge Reservations

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My husband and I stumbled onto this fabulous Inn and what an unexpected find it was. Old and quaint and loaded with charm. We enjoyed a couples massage that was one of the best I've ever had and the mineral baths are PRIVATE. Quaint is code for "not everything is modern or perfect BUT this place is not to be missed if you are looking for laid back and romantic.

- TripAdvisor reviewer June 9, 2011

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Welcome To The Historic Riverside Inn


      Riverside Hot Springs Inn & Spa Hotel| Portneuf Grille & Lounge
Lava Hot Springs, Idaho

Boutique Hotel for Adults 16 Years & Older
Free Continental  breakfast
Free onsite hot springs soaking, & Wifi
Located in downtown Lava Hot springs, Idaho, the historic Inn, the Riverside Hot Springs Inn & Spa is located next to the Portneuf River. The Riverside Hot Springs Inn lodging & spa destination also offers a dining & lounge experience!  We are the only full service Lava Hot Springs hotel in town, featuring 18 guest rooms, world famous onsite hot springs, massage, & award winning onsite restaurant & lounge, the Portneuf Grille & Lounge.  Lots of things to do!  We've got it all under one roof-you don't even have to leave the building.  Perfect for the business traveler or those seeking a relaxing, rejuvenating experience.
All overnight stays include complimentary wifi, on-site lighted parking, private on-site hot minerals springs soaking and mid-week Continental Breakfast or weekend breakfast vouchers in our restaurant (based on single or double occupancy), Staffed 24/7.
Listed on the National Register of Historic Places with the National Park Service, the Riverside Hot Springs Inn is the only full service hotel in town.  The Riverside Hot Springs Inn was built in 1914 and quickly acquired the label of “The Honeymoon Hotel” for its yesteryear elegance. The historical Inn was known to be visited by several famous people including President Theodore Roosevelt.

Our entire facility is non-smoking.  Both the hot water and the building is heated with hot geothermal water.  Eco friendly bath guest amenities.


Download Fact Sheet



  • Check in: 3pm

  • Check out: 11am

  • Check In Age: Minimum 18 years old.

  • Child Policy: Adult Hotel - 16 years and older only with parents, please.

  • Pet Policy: Maximum 2 dogs. There is a $15 per night, per pet fee accessed. Dogs may not be left in guest rooms unattended at any time.

  • Smoking Policy: The Riverside Inn is a non-smoking facility. Smoking will result in a $200 charge.

Riverside Hot Springs Inn
255 East Portneuf Street • Lava Hot Springs, Idaho 83246
Phone: (208) 776-5504 • Fax: (208) 776-5504
Toll Free: (800) 733-5504

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Monday September 26, 2016