This is one of my favorite places downtown for Ethiopian food. I've been there three times for dinner and I highly recommend it.
Definitely go for the dishes to share that allows you to sample the variety of the vegetarian and meat dishes that are on the menu.
I love the pancake like bread that you eat the food with. Just make sure you wash your hands before you start eating since there are no utensils.
The ambiance is a low key casual type of restaurant and the prices are reasonable (around $50-$60 for a meal for 3). If you want high end fine dining, this isn't the right place for you.
I don't recall having any problems with the service.
Overall, I think this is a good restaurant for ethiopian food. The only other place i have tried is the Blue Nile in Montreal and it is equally as good.