The Quisby is a nice little hostel very well located - there is a tramway stop just in front of it and which takes you to the French Quarter in 10min !
The room was clean, the bed was comfortable, and the breakfast was a plus! They also offer you a Margherita at the bar which is really cool and make you feel welcome :)
To appreciate your stay even more, I would recommend you to bring earplugs as some people can be very noisy at the bar in the middle of the night. I also found stains on the two towels I borrowed during my stay, which gave me the feeling that they were not really clean...
Be that as it may, I really enjoyed my stay at The Quisby and probably won't hesitate to come back for my next time in New Orleans.