The food is fine. Classic Denny's food and quality,
The staff are nice.
It is, however, the worst managed Denny's I have ever been in. We live nearby and were happy there was a local, very nice looking Denny's. After several meals there, we're about to give up. You wait forever to be seated - today, with an almost empty restaurant and 6+ wait staff, it was because all the tables were dirty. The waiter rapidly wiped off the table and tossed the rag to the next dirty table. I took photos of the dirty tables and tray full of dirty dishes that stayed right by us throughout our meal. The wait staff appear to be untrained. No one cleans table; the wait staff run around empty handed, never picking up a dirty dish.
Where's the manager?
Whoever owns this particular Denny's - get yourself an experienced manager who knows how to assign sections to wait staff; get a bus boy and keep the tables ready for customers.