Julie Smith, the author of a number of crime novels set in New Orleans (and in San Francisco) discusses the difficulty of taking up writing again after Hurricane Katrina in this interview with NPR.
Here's more about Smith's writing.
Louise Claire, De-Mythifying Julie Smith, 1(7) Bookcase 14-17 (October 1995).
Frederick Isaac, Investigator of Mean Rooms: A Profile of Julie Smith, 15 Clues: A Journal of Detection 1-11 (Spring/Summer 1994).
The Julie Smith interview is part of NPR's series on Crime in the City. Other mystery writers who contribute thoughts on their favorite cities are Sarah Graves, Robert B. Parker, Michael Connelly, Laura Lippmann, John Burdett, and Donna Leon. A book you might find interesting if you like to read mysteries about places you plan to visit is Nina King's Crimes of the Scene (St. Martin's Press, 1997), which lists mysteries by geographic location.