Pros:
Interlocken is nestled in an industrial and office complex by two major highways between Boulder and Denver. It is a nice location and not without challenges. The "normal" nine holes are very short with the exception of hole four which is a medium distance (about 250 feet). The lack of any long holes makes it a good course to practice tricky approach shots. It would also be a fun place to learn or take kids. It is a creative use of very limited space. If I worked in the area I'd be over there every lunch break. It is under used and usually not very crowded.
Cons:
Though it is a nice attempt, it still feels like a disc golf course wedged in where no one thought a disc golf course could be. Winds can be high and there are no long drives. Markers painted on the sidewalk are very confusing since there are two (or three) different courses to play. There are nine targets, but there are nine tee, eighteen tee, reverse eighteen tee, and, as I have heard, twenty-four tee versions to play. There are no pads and tee locations are hard to find. I'd recommend just go out and make it up.
The fourth hole has a very thick muddy "creek" on one side that you must avoid or lose a shoe. You really don't want to go in there.
Other Thoughts:
Great for kids
Few hazards
a couple of tricky shots for fun