Been here a couple times since I work in the area. It's pretty standard, nothing really special. Would not recommend the Bamiyan Wraps though... They skimp on the meat and it ends up being 90% vegetables.
Kofta Bamiyan Dinner + the naan (3/5): I'll break it down like this: 50% rice, 30% salad, 20% meat. The salad and basmati rice are standard. Their meat is hit and miss though. Some pieces will be juicy, other parts will be dry. I found I had to couple some meat pieces with the salad to give it some moisture. Also since there is ALOT of rice, come here hungry or don't order the meal with rice. The naan is tasty though! Great to eat alone throughout the meal and served up fresh from the oven for the meal :)
Cost (3/5): Hmmm $10-$13+tax for a meal. It's not breaking the bank, but I've had better meals at this price point.
Service (3/5): Depending on how many people there you might have to wait awhile. It's fast food style so can't say much here.
Ambiance(3/5): It's more a fast food place, but it's got a decent seating area. Nothing special here. Like yelp puts it, "A-OK."