First a word about David, our host. Last year, we were all set to head down to Jazz Fest, with a reservation locked in with David. Circumstances interceded and we had to cancel. I knew the rules and was certainly willing to accept them, which included a significant cancellation penalty.
David, out of an abundant sense of graciousness, told us that if he could rent the place in time to someone else, he would keep our forfeited money "on account" that he would credit to a future stay.
We went back this year, and true to his work, David credited us the money -- life makes heroes out of people who do what they say. David's ours.
On to the stay - The description of the place is 100% accurate. For us it worked perfectly, but please be sure you know what you are getting into: the front door opens to the bedroom, and the rest of the extraordinarily spacious place opens in rooms behind. If you are cool with that (we were), it is perfect. The bed is a full bed, so if you are used to a King, well, it is a chance to get closer to your spouse!
There is second bed in the next room that is good for 1. As others noted, the second room is separated from the other half of the duplex by a door that has some gaps. The neighbor (a good dude, we met him) does watch a lot of TV at night and is not very quiet. If have someone sleeping in the second room, bring earplugs. If not, you can isolate the room.
Like a lot of homes in NOLA, water pressure for the shower et al is thin, but that's just the way it is.
David's got things figured out - cold beer in the fridge, and a couple bottles of wine waiting for the guests' arrival - nice touch.
So, in conclusion, if you are 2 or 3, and you don't mind the modified floor-plan, and can tolerate an acoustically active neighbor, this is a great choice.
Note - don't you dare reserve for Fest next year - we want it back.