We've stayed at
United Campgrounds in Durango Colorado several times and enjoyed each stay, although we haven't been there in the past few years.
It's close enough to town that it makes a nice bike ride. Also, the Durango Trolley has a stop just outside the campground that takes you into town. Very convenient if you want to have cocktail hour in town and not drive ...
The Duranto-Silverton train goes right through the campground, once in the morning and again in the afternoon, which is a daily event, kinda like watching the sunset in the Florida Keys ...
Wayne