I've been here a few times with vegan friends who eat here regularly and really enjoy it. I'll admit I'm not completely sure I see the attraction, but I'm glad they're happy with it!
The food is certainly fine, though I would say it's not the best ever or anything. The owner and staff are very nice and friendly, so that's certainly a point in their favor. Cleanliness doesn't seem to be the top priority, at least the times I've been here, but the food has seemed fine.
So I guess I'm personally a bit "meh" overall about Abyssinia, but if I'm not mistaken, it's often considered the best Ethiopian food in the Triangle (maybe the only?? I honestly haven't heard of another nearby).
Cons: Not the cleanest place, Only OK food