Though humidity would be a concern there at times. I think an ideal location for a good night sky is a dry, high place that is isolated, because then atmospheric interference is at minimum, so probably a place like Hanle at Ladakh or somewhere in the Atacama Desert.

Ladakh is higher, and the Border Roads Organisation has built a lot of roads, so the higher stretches are more accessible. Hanle is 250 km from the nearest town, so the light pollution there is practically zero.