From Benito Juarez (the main street and Highway to the US) turn onto Josepha D as if heading towards Las Conchas. It will be on your right hand side in a very large warehouse type building with the word Construama but then also smaller signs that say CS. Plus they have a little restaurant on the property called CS Bistro where you can try the different foods they bring in. It is probably a mile down on the right once you get onto Josepha D.
I will explain it as if you were coming into Penasco from the States. The main highway from Lukeville to Penasco turn left at the very first traffic signal you come to as you are entering town. That is Josepha Dominguez.
That same intersection if you were to turn right you would wind up at Sandy Beach by way of the desert round about that road is Samuel Ocaña on one side of the train tracks, and Gus Brown Blvd once you cross the tracks on Sandy Beach side