I've stayed at the City Center Inn the last 3-4 seasons. Exit 7th St., south to and left Main St. between 5th & 6th st. immediately on your left; North side. You can get it for $60.00 per night, for two queen beds, as an ice climber rate. Limited selection, but free breakfast at their attached resturant, plenty of room to dry gear; very clean. 406 587-3158
Good luck,
Mick