I've only been to a few different Denny's locations but I don't know why this place is only three stars because the food is absolutely AMAZING.
I ordered a custom grand slam: egg whites, sausage links, hash browns and an english muffin. Boy was I in for a treat! The egg whites were delicious and perfectly done - I woofed it down. The sausage links were nice and juicy. The english muffin was warm, well toasted and a tad buttery but I'll allow it because the dish was so delicious. The hash browns were absolutely STUNNING. They were perfect. Absolutely perfect. I add ketchup to mine so I'm not sure how it tastes without ketchup but BOY OH BOY I WOULD ORDER THIS CUSTOM GRAND SLAM AGAIN AND AGAIN AT THIS LOCATION ONLY. They blew the basics of breakfast out of the water. The hash browns were woofed down alongside the eggs, in fact, I literally swallowed the entire dish whole.
Their grand slams are a MUST. I'm itching to return to this Denny's and this location ALONE. It's attached to a hotel which threw my boyfriend and I off at first when we parked (for free mind you) but the food quickly made us change our minds.
The place was nice and cozy, it's more spacious than one would think from the exterior. The waiters were straight to the point and efficient - perfect for those early morning drop-ins prior or post sleep.
I'm 100% returning to this location.
EDIT: I returned to this location 2 more times since and the waiters and waitresses were lovely as per usual. However, the food quality had diminished since my first visit. Perhaps the chef is different from my 1st visit at 2 AM in contrast to my last 2 visits at 11 PM-1 AM.