Bardia's (Adams-Morgan) had a friendly and helpful proprietor, but is hit-or-miss. The fried foods were meh, the jambalaya bland. The creole was pretty good for the DC area, but the price point was too high for what it is, especially given the bare-bones atmosphere. If I'm in Adams-Morgan, I'd rather have Ethiopian or Cashion's. And I'm in Adams-Morgan much less in my thirties than in my twenties.
The new Acadiana (9th and New York) is a beautiful space; I went with Shani for lunch Restaurant Week. I agree with the assessment of too much butter and not enough chile, but the presentation was aesthetically pleasing. Decent gumbo when served at Restaurant Week prices. But I've never been a big fan of the Passion Food Hospitality chain of restaurants, so your mileage may vary.
Isn't it sad that my favorite Cajun in the area is the Popeye's at the Pentagon City mall? (It's the one branch of the chain locally that serves jambalaya.) And even in Pentagon City, I'd just as soon get drunken noodles at the Thai place next door to Popeye's—no line, because noone seems to trust food-court Thai.