This is a good campground, with flush toilets, showers, and a pretty comprehensive store and basic restaurant.  The site sizes and configurations vary quite a bit.  Ours was extremely tight for our teardrop…with the trailer attached couldn't even back in far enough to keep from blocking traffic with the tow vehicle.  Our campsite was very dusty, dirt got into pretty much everything by our 3rd day (the showers were also full of dirt).  Crater Lake lodge and the rim drive are a few miles up the mountain.  While there isn't really much to do on the lake itself, there are tons of great lookouts and beautiful hikes.  Next time we'd probably stay at Diamond Lake or one of the other lakes in the area where you can actually boat and swim and take a day trip to Crater.