Probably a 4.5. Not the best site ever, but definitely good enough for a one nighter. Went all the way to the coordinates and found a spot good enough for a tent and a car. Not super level, but worked with limited options available. Proximity to North Cascades is nice. River nearby.
There were some people pulled off on the side of the road camping that we saw before getting all the way to the coordinates. My guess is that you could find somewhere to pull off and sleep in a car because the road goes on for awhile. Not as tent friendly, but we were able to find a spot. Not super busy on a weekday. Bugs kind of annoying but not terrible. Road was easy enough in a Subaru. Not paved and some small pot holes, but not a problem at all for us. No road noise or traffic at night. No service.