Southwest & Alaska often offer cheap flights to Boise ( depending on where you are coming from). Rental cars are located onsite at the airport. The airport is very small and easy to maneuver.
Nampa is about 20 miles from the airport ( 20-30 minutes, depending on traffic). Downtown Boise is 5-8 minutes from the airport.
A happy medium between staying downtown and out in Nampa would be Meridian. Think-suburban Boise. Lots of restaurants, shops etc. Yet still close enough to see the mountains and get out in nature if you so desire.
Complimentary airport shuttle
Trillium restaurant located in the hotel
Centrally located downtown
Considered one of Boise's top tier hotels
This hotel is located right on the Greenbelt/Boise River. It is near many restaurants, cafes and shops.
This location is near the Boise Towne Square Mall & a 10 minute drive from the airport. It has a bar, a restaurant and breakfast is included in the rate. It is located in an area that also has many dining and shopping choices.
Downtown Boise's premium boutique hotel, beautifully restored and curated, with a distinctively upscale dining and late-night gastrotavern counterpart.