It is a Denny's, so you should know exactly what type of food you are going to get. Is it bad? No, I would say its average, maybe sometimes above average for a chain diner.
From my experiences, the servers and hostesses have always been great. The tables are cleaned up quickly and the bathrooms are pretty well maintained. The food is served fresh and hot. Last time I was there I tried their milkshakes- delicious- and red velvet pancake puppies. After my girl friend and I laughed at how awful the pancake puppies looked, we tasted them and were in heaven. An absolute delight. However, I was sad to see they didn't have their entire Hobbit menu back...
There are a lot of coupons that you can get for your next Denny's trips in the local coupon clippers, online, and even their app. So be sure to keep your eye opened to try and save a buck or two.