I definitely enjoyed my experience at ONoir, but i'd probably recommend going only once.
If you've made a reservation, you're coming for the experience, not the food. I had the eggplant appetizer and Marinaded Shrimp. The quality of the food was very average. The eggplant was soggy and small portioned. The shrimp was delicious, but the accompanying rice and vegetables were over sauced and overcooked. However, the ambiance was great. There was a live jazz band playing behind us, which complimented the mainly French speaking diners who were enjoying their meals. Again, a memorable experience.