Travel
Stay in Eagle (first 2 options) if you want to be close to the venue and prefer a calm, quiet vibe. Grab a coffee/tea at Form & Function cafe, get a day-pass at LifeTime (gym, spa, cafe, bar, pool, tennis, pickleball), walk the charming small-town streets of downtown Eagle, drive through the scenic foothills (Dry Creek, Hidden Springs)...
There will also be a family-friendly Harvest Fest at Heritage Park in downtown Eagle on 10/10 from 10-4pm.
Stay downtown (second 2 options) if you want a more fun, active vibe (another option is the Inn at 500 Capitol) - these are further from the venue but not too far. Downtown is very walkable to many different cafes, restaurants, shops, nightlife, etc. - check out 8th street, Hyde Park, Greenbelt/Whitewater Park, Table Rock hike...
A Few Favorite Restaurants in Boise:
Breakfast/Lunch - Aubergine Kitchen, Rembrandts, Certified Kitchen + Bakery
Dinner - Pig Latin, Percy, Barbacao, Fork, Susina, Coa de Jima, Vintage 61