Spent a week here while I was visiting Moab. The road coming in is veryyy bumpy and rocky, but 2WD accessible with patience. For my first couple days, I camped almost exactly at the coordinates provided here. Not a bad spot, but I had tons of neighbors really close by, and they were loud. Verizon had 2-3 bars, though, so that was nice at least. Really struggled with finding a place to pee, as there's not a lot of tree coverage and a bunch of other campers nearby.
For the rest of the week, I moved to another spot a little closer to the entrance (38°25'23.7"N 109°26'60.0"W),,) and it was a lot more private. Really recommend this spot if you can snag it. Verizon was only one bar, though. Still had loud neighbors for a couple of nights, but at least they were further away.