I would agree with gmf about the B&Bs. Having lived in NOLA for a number of years, I would also recommend you consider staying at one of the several plantations at least one night. Ormond Plantation has rooms for about $125 night that incl. wine & cheese in the room and breakfast. Oak Alley Plantation also rents out rooms. Both have their own websites. You'll definitely want to rent a car as there is much more to NOLA and S. Louisiana than just the French Quarter. Check out the entertainment section of the Times Picayune Newspaper at http://www.nolalive.com/ for leads on festivals and live music for the dates your in town.

Hope you have a great time.