I snagged this little gem because I needed, well, some one-room scenes for an upcoming game. By and large, it's a great bargain - the dungeons that hit the mark hit it dead-center, combining novel concepts, interesting hooks, and excellent art work. There's a few that don't really work, at least for me, because they go a little too old school - simple maps on faux graph or notebook paper, hard to read fonts, and overall dullness, typically. In a couple of cases, the dungeons are flat-out silly (Piece of Cake), which doesn't fit my own tastes.
Regardless, OPDC 2017 is a top-notch product, and the good bits within far outweigh the drawbacks.