My friend and I had a great three day weekend here at one of the walk-in sites. Sites fill up quick and I recommend reserving online in advance. Important takeaways:

1. There are no lakeside camp sites. I enjoyed this because it means more privacy and quiet.
2. The main beach gets very busy on the weekends with day visitors. However, there are several small private coves just off the lake trail if you are willing to walk a bit.
3. The lake is pretty warm for the PNW and does not allow motor boats, making for a very family friendly swimming hole.
4. Regarding the walk-in sites, the sites are between 1/4 to 1/2 mile from parking. There are supposed to be wheelbarrows available near the parking lot, but people often keep them at their site. If you have a lot of gear and are coming on a weekend, I recommend bringing your own wagon if you can.
5. The sites have toilettes and water spikets. There are also restrooms with running water, showers, and a convenience store near the main parking lot.

Just 45 minutes from Portland, sans traffic, this is an awesome weekend camping spot. I would also love to go on a weekday when it is less busy.