Yelp that's pretty common, which is pretty cool.
We got the vegetarian combo and lamb tibs, which was more than enough food for the two of us. The veggies were good and nicely seasoned (I especially liked the beets) the tibs was (were?) good as well. They have 5 Ethiopian beers for $5 each, and other beers for about the same or less. The prices for the food are reasonable too, the veggie combo was $12 and the tibs was about $8. They also have tej (honey wine) lots of coffee drinks and more.
I'm no expert on Ethiopian cuisine, but Tegeste seemed comparable to the places on U Street. I'll definitely be back.