From Baton Rouge/New Orleans/Slidell:

Enter Mississippi on I-10 East
Take Exit 2 (the first Mississippi exit) toward Waveland
You are on Highway 90
Travel through Waveland and Bay St. Louis
Cross the Bay bridge (about a two mile bridge)
After exiting the bridge take the first right (a lumber company is on the corner)
Travel down the street to the stop sign
Stop
Proceed down the street and the house will be on the right near the boat launch