Mark's place was great, it is in a fantastic location (10 min walk to Tulane, 15 min to the steetcar for the French Quarter), super quiet neighborhood and safe! We enjoyed the quiet and particularly the cool basement (it was 80 degrees out in the sun), so coming home to a cool place was very refreshing. Mark's place also had some nice touches such as a Keurig machine with lots of free coffee, tea and a large fridge.
Be aware that Mark and his family (including dog) live above the apartment, so if you are super sensitive to noise, you may hear normal family noise from above.