Yes.... fix the stinky, lingering, poopy, and continuous odor in the restroom. It has been going on for 2-3 months, and I'm not going back until the poop smell is eliminated. Call a plumber. I challenge the owner to go sit in that restroom during the late afternoon or evening time frame for 10 minutes. It is enough to gag a maggot! When someone goes into the restroom the odor rolls on out into the nearby eating area. I'm going to report this to the city restaurant inspector next week if you do not fix this mess.