The town of Ajo is ideally located as a base from which to explore Organ Pipe Cactus National Monument, 30 miles south, and offers a number of attractions in its own right, including the mile-wide New Cornelia copper mine. If you're looking to stay the night, La Siesta offers the choice of traditional motel rooms at the front, and charming cabins - and a small pool - to the rear. It's nothing fancy but the rooms are clean and the welcome - like the weather - is warm!
If you go:
If you need somewhere to eat, Marcela's Cafe is just up the road and serves traditional Mexican food in generous portions (and it;s where the Border Patrol guys choose to eat).
Links:

2561 North Ajo Gila Bend Highway
Ajo, Arizona 85321 USA
Phone Numbers:
+1 (520) 387-6569