We went over Labor Day weekend with a small group and had two adjacent campsites. The sites were large and well graded. They were also well separated from each other with lots of vegetation dividing them. Bathrooms seemed to have been recently upgraded and were some of the nicer state park bathrooms we’ve come across. Kids enjoyed the junior ranger program and the Mt St Helens visitor center across the road has great exhibits on the eruption. About a 40 minute drive to Coldwater lake where you can access a number of trails closer to the volcano.
We had sites 28 and 30 for Labor Day weekend. Site 30 had a nice flat tent pad but was overall smaller. Site 28 took a little more effort to set up our family’s tent on level ground, but was overall more spacious and so our group also used that site as our kitchen/campfire area. Both sites have a view of the lake down the campground loop and are relatively close to the vault toilets, which was fine except for the morning we left when wind off of the lake carried unpleasant smells our way. Overall the lake is beautiful, and there’s great access at this campground. Would absolutely recommend and/or go back, just be careful with site selection!