I stayed here one night while traveling from Vail, CO to Zion National Park. No Services around (except 1 toilet), but a beautiful open landscape with sweeping views. I parked along the lake, and marvelled as the night sparkled. I believe most rigs can access this location (all flat).

I believe it was 3hrs to Zion (probably the same if you wanted to drop down into Bryce) This was definitely off the "beaten path". Very few vehicles were passing on Route 72 (runs south from I-70).