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Party Size
For 2
7:00 PM
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Booked 1 time today

Portneuf Grille & Lounge at the Riverside Inn

98 reviews
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$30 and under
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Top Tags:
  • Quiet Conversation
  • Special Occasion
  • Good for a Date
The Portneuf Grille & Lounge are located at the Riverside Hot Springs Inn on the lower level. The restaurant is located in what once was the hotel's historic confectionery and sandwich shop, while the lounge is the original location of the hotel's carriage house. It offers distinctive, inspired dining featuring Northwest inspired cuisine of fresh seafood, USDA aged prime steak, pastas, vegetarian, vegan and gluten-free dishes. Quality, consistency, freshness and service are of utmost importance to our staff.
The Portneuf Grille & Lounge have been featured in Sunset Magazine,,, 2011 winner of the Jackson Hole, Wyoming Iron Chef Competition, sponsored by Nicholas Food Service.
Dining Style
Casual Elegant
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Northwest, Seafood, Steak
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Hours of operation
Dinner: Sunday - Thursday: 5:30pm - 9:00pm; Friday - Saturday: 5:30pm - 10:00pm
Lounge: Monday - Friday: opens at 5:30pm; Saturday - Sunday: opens at 5:00pm
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Phone number
(208) 776-5504
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Payment options
AMEX, Discover, MasterCard, Visa
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Dress code
Casual Dress
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Executive chef
Alonzo Thomas
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Onsite private party catering is available for all occasions: business meetings, social & holiday parties, and weddings. Complete Meeting Packages (CMP) as well as full bar catering are also available. Kindly reserve in advance.
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Cross street
Access from Main St. (Between Second & Third Street)
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Parking details
Parking available in private lot off Main Street or street parking is available.
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Live Entertainment on Thursday Nights from 6-9pm! Enjoy live dinner music every Thursday night featured in the restaurant and outside by the river during the summer months.
Banquet, Bar Dining, Bar/Lounge, Beer, Cocktails, Counter Seating, Entertainment, Full Bar, Gluten-free Menu, Happy Hour, Non-Smoking, Outdoor dining, Patio/Outdoor Dining, Private Room, View, Wheelchair Access, Wine
What 98 People Are Saying
Overall ratings and reviews
Reviews can only be made by diners who have eaten at this restaurant
4.5  based on recent ratings
Noise · Quiet
100% of people would recommend it to a friend
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OpenTable Diner (Houston)
4.0  Dined 4 days ago

Wonderful food. One of the best pork chops I’ve ever had - very nicely seasoned and served with a baked pear covered with nuts and goat cheese.

BillS (Salt Lake City)
5.0  Dined on January 4, 2018

When we go to Lava Hot Springs to soak, we look forward to eating at the Portneuf Grill & Lounge. Excellent choices for those who prefer healthy options. Food prepared well. We always order the scallops as an appetizer--deluxe. The fish entrees have been perfectly prepared. Fresh ingredients and beautiful presentation.

OpenTable Diner (San Francisco)
5.0  Dined on December 29, 2017

A great find. Cozy little B&B. Alonzo the chef was great. Didn’t think we would find a meal like that in Lava. We will be back.

OpenTable Diner (Boise)
5.0  Dined on December 6, 2017

The food is fantastic here. Both the chef and the waitress were very attentive to our needs. The ambiance was quaint, unhurried and quiet. We will definitely be back again.

OpenTable Diner (San Francisco)
5.0  Dined on November 17, 2017

I was glad I made a reservation! As it was the off season they only had one cook on site. I really appreciated that they would rather have empty tables than let our meal suffer. The food was magnificent. I had vegan avocado tacos, and the home made vegan sour cream was phenomenal. I will definitely be returning the next time I'm in the area.

OpenTable Diner (New Orleans)
4.0  Dined on November 17, 2017

Very good for a higher end food experience. Waitress was very nice and positive. Not cheap but the quality of food, obviously a good chef is involved, is well worth the higher and appropriate pricing.

OpenTable Diner (Boise)
4.0  Dined on November 2, 2017

Hidden Gem! Portneuf Grille is located downstairs of the Riverside Hot Springs Inn. The bar was quaint and a fun place to get a cocktail. There is a happy hour from 4:30PM to 5:30PM. The service was attentive, we were greeted by the chef at he end of our meal which was a nice touch. There was a nice selection of vegetarian and vegan options and the chef was willing to accommodate to meet my dietary needs. 4 out of 5

OpenTable Diner (Boise)
5.0  Dined on October 29, 2017

The pumpkin pasta with sausage was excellent. We invited my daughter and her husband to dine with us and they both enjoyed their meal very much. The chocolate lemon cheesecake we had for dessert was the best cheesecake I have ever had.

OpenTable Diner (Boise)
5.0  Dined on October 14, 2017

From our waitress, to the chef and pastry chef all greeting us with genuine personalities and awesome service - we really felt at home - and the food was incredible!

OpenTable Diner (Boise)
4.0  Dined on October 7, 2017

Dined here over the weekend and it was pretty good. I had Butternut Squash soup as an app which was delightful, and the salmon was cooked perfectly. Only complaint was the sauce was overpoweringly sweet and my salmon was soaked in it. My boyfriend had the pork chop which also tasted great. Service was great, decor needs a little extra love but overall a good experience.