The Ohanapecosh campground is on the southeast side of Mount Rainier NP in old growth forest.  There are a streams and a river running through the campground, so a lot of sites are on water.  Its fairly standard for a NP campground, with a fair amount of privacy for each camp, but also with facilities which are getting older.

While the campground is a long way from the "main" areas of the park, I really like camping here.  You are away from a lot of the crowds that you find at the other two campgrounds within the park, and Ohanapecosh takes reservations.  You can also do some pretty nice hikes right from your site, including Silver Falls, which are very nice.

Pros:

* Quiet (well, quiet with stream/river background noise)

* Large sites w/privacy

* Hiking from the park

Cons:

* Facilities are showing their age

* Sites are rustic, often not very level, and sometimes difficult to get into

* You have to drive ~1 hour to Longmire or Paradise

NOTE: you cannot bring larger trailers into this campground.  The roads are very tight!