If you are like me and only hike once or twice a year, this is a hard loop. I really enjoyed my hike and there were some really nice swimming holes if you a there in the summer. Also take water the drought has dried up everything between adams gap and turnipseed.
My wife and I visited from CO, so we may be a bit biased, but other than the falls ( which would be very nice after a solid rain) I wouldn't not return. The trail was very difficult to follow. Several times we were only assured that we were on the trail by trash left by other hikers. The trail was overgrown and covered with spiderwebs. We made it around 2 miles in and stumbled on a yellow jacket nest, and were stung several times apiece, at which point we decided it wasn't worth continuing. If we were to return, we would only go to the falls and not attempt the hike.
This trail would be beautiful in the late fall! The view was a little grown up and the falls are dry in the summer. Also be prepared for a lot of large red ants along the trail and some pretty overgrown paths. At one point there is a magnificent overlook but past that the map seemed WAY off and it led to nothing but another trail- possibly a connector? You also could not call this a loop trail it is out and back. Overall challenging enough with a good amount of flat and cool breezes. It is lightly travelled and peaceful!
We parked at the parking area approximately 2 miles from the campground and swimming area. The trail is marked well to coleman Lake. The lake was a mile or so in from the parking area. We went on the Saturday before Memorial Day and we saw no others on the trail. There were people camping in the campground and swimming in the swimming area across Coleman Lake.