Great cabins, beautiful location
We stayed a couple of nights in the cabins in this campground when they were brand new in 2013. Personally, I'd be wary of tent camping in the summer here because it gets very hot. Returning from a day hiking on the rock and chilling in the AC of the cabin was priceless.
The location is great, you can walk right from the camp area up the mesa which has incredible views, or go swimming in the lake or any other water based activity. It's a short drive to town where there's a grocery store and the Grand Coulee Dam, which is a must-see if you're in the area. At night they do laser light shows, which was a fun side trip.
The facilities are great, water tap nearby, picnic table and fire pit with grill at the site, and clean restrooms with showers (that you pay for). The bathrooms get pretty sauna like in the heat but are survivable. We had a blast trying our hardest to grill things on the fire pit, though we did break down and use the microwave in our cabin at least once... The minifridge in the cabin was also nice for that. Glamping at it's finest!