My family and I were in STL on vacation. We stopped at Denny's because we loved Denny's and were craving it. Upon walking in, we should have known what we were in for. It smelled like dirty carpet. We sat in a booth next to the service station. The back splash was filthy, the coffee pots were filthy, the bathrooms were so dirty, I didn't sit on the toilet. Even though they have a sign posted on the door stating how much pride they take in keeping their restrooms clean. Not so. The food was HORRIBLE. My son ordered a burger with CHEESE. No cheese on it when it came out. They just slapped a piece of cheese on it and gave it back!!! The bottom bun was so soggy that he couldn't eat it. So, it goes back, they literally just replaced the bun!!! OMG. My sandwich was so soggy with grease that I couldn't eat it. Each bite I took, my mouth filled with semi warm grease. I told the waitress and she just took it from my table without any apology. So, I sat there, hungry and watched the rest of my fa