We stayed here in February so the whole park was not open.  As with all state parks, some spots are better than others.  The ranger was very nice, although there for only limited hours.  It was quiet and obviously close to Padilla Bay which was a nice walk.  Also an easy drive to La Conner and Deception Pass.

This is a big park that is part of Thousand Trails.  No sales pitch to join, which was nice.  Rangers were super nice.  Bathrooms very new and clean.  Lots of trees between sites.  Hard to find one in the sun if that is what you are looking for.  Looked like lots of long term campers.  Very quiet.  We enjoyed see the surrounding area - Beaver Lake Park, Carnation, Fall City.  Didn't make it to Snoqualmie Falls, maybe next time.

I have never had such wide spread out spaces in any state campground.  It was amazing.  The spaces were level, lots of grass and enough trees to provide shade at every spot too.  The campground is just outside of town and next to the river.  The river level was low so the swimming area was disappointing at the time we were there.  Campground was so quiet.  At night there was a bit of road noise, but mostly drowned out by the sound of crickets.  Restrooms were clean.  Bike path is really nice.

If you like hot dry weather, tall pine trees and not much grass this is a great spot.  It is between a river and the freeway, so you get a lot of freeway noise but I thought the spaces were fairly far apart and spacious.  Lots of pull through spots too.  It's a big campground but super quiet.  The store has a lot of camping stuff, but not much food.  Easy to pop into Cle Elem or surrounding area to explore.  I needed an Eastern Washington fix so I really enjoyed it.

The website says it all - family owned for years.  Cute place, very friendly and helpful staff.  Some sites are better than others, which is normal these days.  The restaurant and lake are awesome.  There is pretty good WiFi, only dropped a couple of times.  Also easy to get out to walk the trails at Millersylvania State Park or visit the Wolf Haven refuge (if you make a reservation).  Only downside for some is that there are no restrooms, so campers, trailers, RVs must have their own bathroom.

It was our first visit to Mt St Helens area and it was amazing.  April is not peak season so the campground was pretty quiet and the weather was a bit chilly.  We booked a spot right next to the lake.  The people that run Streeter's are super nice and helpful.  The little store / cafe is great.  We also went into Castle Rock for dinner one night at the Oasis and found the people there to be super friendly as well.

We stayed here 2 nights with our rpod.  Our site was big enough for our friends with a tent to pitch it next to us.  We had a site on the end of a grouping.  Some sites are way too close together, but others are more spacious.  We were happy with ours.  We brought our inflatable boat with us and had a nice cruise around the lake, even went swimming!