I reluctantly revisited Nader's with a group in spite of my first experience (which I thought I had reviewed but cannot find on Yelp) because of its convenient location.
Unfortunately, the experience was not an improvement from my first. While the grilled food is tasty, the portion size is noticeably inferior to their competitors which also have lower pricing. (Please read my reviews of Kabab's in downtown Toronto).
Even more disappointing was the service. The first time I visited, it was simple ... the food order was made at the cash register and a server simply dropped off the food to our table. This time, we were told at the register that Nader's was a full service restaurant.
The reality was that the service was dreadfully slow. The food took much too long to prepare and we had to ask numerous times for water. And the server could take a lesson in customer service 101. "Please", "thank you" and smiles go a long way in encouraging customers to come back.
Finally, I think the City of Mississauga should visit and consider whether their ventilation systems are sufficient for the space. As someone else noted, the restaurant is massive and the smoke from the grill is not being sufficiently pumped outside of the restaurant but rather seems to remain trapped in the cavernous restaurant. The result is that it's smokey in the restaurant and you leave with your clothes reeking of smoke.