Mark and Bruce's place is, without a doubt, the best Airbnb I've stayed in (and I've been in a couple of dozen around the world). It's even more beautiful in person, with amazingly comfortable beds, generous amounts of space (and two full bathrooms), and great decorations throughout. Mark was quick to respond to any questions; when we couldn't figure out the air conditioners, he came over right away to get them set correctly. I could go on, but, in brief, it was everything you ever thought an Airbnb could be.
It's a 15 minute walk from the French Quarter, but the Bywater is the real New Orleans to its core. You're right near restaurants (like right around the corner), galleries, and bars, but it's a quiet neighborhood with friendly people and charming houses everywhere.
We stayed for five nights, and all four of us agreed we would miss the place as we left.