Traveling home to Florida from Long island I stopped at a few Waffle House’s Most were pleasant but a few were dirty one being so dirty I walked out of the place.
The only chain or franchise where I’ve yet to experience a poorly-run location is Chik-fil-A. With the rest I’ve had occasional bad experiences. Waffle House might be a little more prone but you can generally tell from the minute you walk in the door. Clean with nice people working there? They care, the rest of your experience will likely be good.