Went a few weeks ago with a buddy. Nice little place, nothing too special or fancy. More decorations on the walls would probably provide more ambiance, but it is better than going to the loud and noisy mall food court to get something similar from Sarku.
Which is essentially all this is. However, from the taste, I'd put it it a step above Sarku. The setup is similar to Noodles & Company, where you order at the counter and they prepare it fresh and bring it out to you. Filled me up and I didn't experience any gastric distress afterwards, so makes it a decent fast-casual place in my opinion. Nice addition to Monona where fast food means crap food and casual usually means full service sit-down. Plus, kind of nice for single, childless persons such as myself who want Mongolian beef, but don't want to order a whole quart container worth to be eating over the course of three days.