Washburn Campground is one of two campgrounds in Hearst San Simeon State Park, the other being San Simeon Creek Campground.  We stayed in both campgrounds. The two campgrounds have different amenities and features, with the Washburn one being more "primitive" even though neither have hookups.  

Coin operated showers are technically available to San Simeon Creek guests only, though I'm not sure how anyone would know or care if a Washburn camper went over to shower at San Simeon Creek. 

There are pit toilets available in Washburn, as well as trash and mixed recycling dumpsters.

Washburn is $20/night, with an $8 reservation fee when making reservations online.

There is practically zero verizon service, very weak AT&T service, but decent T-Mobile service on our hotspot.

There is a path over to the beach, very convenient (goes under Hwy 1).

Elephant seal viewing is nearby, as well as being close to the cute town of Cambria and San Simeon.

Warning: the map is wrong!  We picked site #226 based on the map showing that it wasn't next to the toilet.  The toilets ended up being directly next to 226, which was fine but not our favorite thing.

There is a dump and water fill for RVs located in between the campgrounds, and they are available to guests of both (or $5 to use for people not staying at the campgrounds).  Firewood also available for sale from the host, but check out the hours before heading over to buy wood.

We stayed here in mid-March, and the campground was beautiful and green and peaceful.   The landscape may turn brown later in the year.  

The sites are nicely spaced out for the most part.  Each site has a picnic table and steel fire pit.  Some sites have some trees for shade, but most do not.

We really liked it here.  The $20/night compared to the $35 at the busier and more active San Simeon Creek makes it a no-brainer that Washburn is where we'd choose to come.