We have been to Ouray probably 10 summers out of the last fifteen. , We have stayed at all the campgrounds there, but now we always stay at the KOA. Friendly people, great foods and CLEAN facilities!!!
As said, don't miss the pool and take a tour of the mining museum, we don't have a clue about manual labor these days! Its right downtown. a block off the main street. If ATVin is your thing, we have stayed at an old town site, I think it was Georgetown, about 7 miles up the road from Silverton (between Silverton and the ghost town of Animas Forks).
There are no buildings anymore other that a tall small brown building by the road. DOn't know what it is. Across the road is a large waterfall. We have dry camped there several times and you can ATV or Jeep from there. It is a beautiful spot! Nothing like lounge chairs, a cold one with a campfire in the evenings! Don't plan on doing the Alpine Loop on an ATV, you can't get thru Lake City, they are banned there.
We never get tired of the Ouray/Silverton area!
Robin