From I-5 / US 2 Everett : 

Get on US 2 and Head East... Through Leavenworth, Cashmere, and past Wenatchee,
   Crossing Over the Columbia river and Turning Left at the Stop Light.
Still on US 2, Head North, with the Columbia river on your Left... turn at Orando towards Waterville, still on US 2 Eastbound...  Continue through Waterville, Douglas,
and Coulee City...  Just past Coulee City... Stay Straight at the US 2/ Hwy
Junction. Continue North on Hwy
155.  You are now entering the Grand Coulee,
   Banks Lake is to your Left, and it's Only 25 Minutes to the SkyDeck Motel.
You will see Us on the Left Side of the Hwy at the North end of Electric City,
   Turn Left Down the Drive, The Office is by the Lake.