Some say Lebanese food should only be eaten out of a styrofoam container at 2am. To those people, I say go to Sumac.
Sumac is the next level of Lebanese. The food tastes great and is clearly prepared fresh in their kitchen. I love the ambiance of Sumac and the fact that they have a full bar.
The eating space consists of small tables and a long communal bench. The larger plate are meant to be shared between friends in a family style of eating. The room can get loud as the restaurant is super popular for dinner times but it's always such a warm and comfortable environment. I would come back for that eggplant salad any day.
Food-wise I would say it tastes less greasy than some other fast-food places but I'm sure you can find the same quality Lebanese in other parts of the city. Definitely go for the experience though. It's a great place to eat.