Cooper Lake is absolutely stunning and admittedly the campsites are situated pretty well for views and privacy but there are definitely Pros and Cons to this campground.

Pros:

Right on the lake and if not you get a very private site walking distance to water
Great hiking trail

Lake access 24/7

Lot's of big shade trees

No internal combustion motors 

Vault toilets in good shape

Dumpsters

Cons: 

Extremely busy (and LOUD) day use area

Steep hill and trails to all the sites - pack light and even then it is A LOT of work getting into your site

$18 for a walk in site...? eh a little steep for me

Did I mention the loud day use area with lots of screaming kids?

No bear boxes by the lake so you also have to trek your cooler/dry goods up the hill every night to not attract wildlife.

All in All this was a solid 3.5 stars.  There were pros to out weight the cons but in the end if I am going to walk that far to haul my stuff into a site I want it to be pretty remote/serene OR be a little cheaper.