This was a really nice reprieve from the madness of the casinos, come one in the morning. I was a bit surprised to find the restaurant completely empty, but it was almost one AM on a Tuesday morning...
The woman who took care of us was very kind and had a (lovely) thick accent.
In regards to the menu, it was mostly the standard fare I've seen for Ethiopian restaurants across the states, plus some extras. Ethiopian coffee and beer, sambusas as appetizers, individual meat and veggie dishes that could be combined into a hefty sampler.
We ordered our regular Ethiopian picks:
Ethiopian beer: B
Sambusas: B- (they were just a titch over-cooked and didn't have the traditional chili sauce with them, as well as being a bit minimal on the pastry filling.)
Vegetarian sampler: A+ -- the tomato salad and carrot/ cauliflower dishes were better than my fave Ethiopian restaurant offers, while the two lentil dishes and the spinach dish were on par.
My true review of Abyssinia would be 4.5 stars, due to the sub par sambusas (my fave part of the meal) and very dark lighting. But if I lived in Vegas, I'd definitely visit them again.