We typically have a hotel block at the Best Western Liberty Lake Inn (just a 10-12 minute drive to the conference) for your use if you plan to stay overnight before or after the conference. That rate will be shared here for the duration of its availability (roughly end of August through early October).
If you prefer to do your own legwork, there are lots of other options (hotels and AirBnbs) in Spokane or Liberty Lake, WA and Post Falls or Coeur d’Alene, ID. Comfort Inn & Suites as well as Ramada by Wyndham are both near this year’s venue, and would be economic choices, particularly if you bunk with friends.