Try Belle Pass Marina in Fourchon, La. they have charters, lodging, store, bar, boat slips, bait and beach is nearby.
Capt Chris Moran w/ Cajun Made Charters owns it and he has several boats for offshore and inshore. (225-931-7306)
I've fished with him for years and have done very well. He has a great reputation on the La. Coast.
If you don't have luck with that, try Grand-Isle.com and look up some of the other guides in that area.
Good Luck to all!!