Beautiful site even when Denali is in clouds
Unfortunately we didn't get to see Denali itself during our 4-day trip in the region (late May), but this campground is still absolutely beautiful even without its namesake. Streams and tundra are punctuated with evergreens, snow-capped mountains in the distance, perfectly Alaska. We saw lots of eagles and moose right on site, plus a porcupine.
Campsite is easy to find (like everything in AK, just look up the milepost!). There are a lot of campsites but definitely make reservations in this area in the summer. It doesn't feel crowded even when the site is full. Good facilities. Great stopover on the way to Denali National Park.
This site claims to be ADA accessible and I'd agree with that. Call the rangers about your specific needs.