Go South from Ensenada (Route 1) to the Bufadora Turnoff in a town called Maneadero. This will be a right turn.
You will go about 9 miles up the north side of the Punta Banda to a point where you cross over to the South side of the Banda. (Note: Punta Banda is the name of the finger of land that sticks out into the ocean.)
When you can finally see south into the bay there is a large pull off area and a little green building. (Turn off is where the first arrow starts in the map below.)