Peeling Wallpaper
We found it hard to believe -- walking into our room and finding a 2 foot by 2 foot piece of wallpaper peeled off and hanging down. A scene from the movie "Barton Fink" flashed before our eyes. The rest of the general impressions of the hotel to that point -- tired and slightly dirty -- paled in light of this.
To their credit, the front desk staff responded with an apology and gave us what was probably a slightly better room (with wallpaper intact). Still, it was a little dirty, the windows didn't open, and the amenities were substandard. 
Overall, not a great experience.