This was a great day hike. We accessed the trail from the Springer Mountain parking lot for the Appalachian Trail, south of the loop, and hiked up the AT to the junction of the AT and the Benton Mackaye Trails. The drive up to the lot took a while, but the road was well-maintained and no problem for a little Hyundai.
The trails are clearly marked - white rectangles for the AT and white diamonds for the BMT. There is enough elevation and stream crossings via rocks or bridges to give you a work out, but nothing super steep or difficult to travel. There are a few spots where a trail turn could be missed, but as long as you are watching the trail markings (or using GPS) you shouldn't have any trouble.
There is a variety of foliage as you cross through different "zones;" lots of amazing colorful mushrooms and a good mix of challenging vs. level trail. We only saw one other group of people during our hike, and a lot of the trial was incredibly quiet, unless you were by the creek.
Overall, a beautiful moderately challenging hike. We all decided we would do it again.