Spent two nights up on Last Dollar Road. Some of the best views in Colorado! Easy to get to, as others have noted, from the Telluride side. As you get up the road, there's a larger spot for campers and then the road turns up (with a warning that you're headed into remote wilderness with less access to emergency services, etc…). The road gets a bit more rough at that point - would not be an issue for a 4WD. I, however, was not in a 4WD. I was in a big Nissan van - I made it up fine but did have a couple of "I wonder if this was a good idea" moments. There are several dispersed spots along the road & a "main" lookout point that a lot of folks stop at for pictures. I stayed at a spot about .4 miles BEFORE this spot and it was amazing. I was there for a Tuesday night / Wednesday night and it was not crowded.
Also, about .7 miles down the road is the trailhead for Alder Creek…which was a nice hike.
I have AT&T and had good coverage here.