Average ratings are based on the published values and not the values entered in your own log entries.
The western part of the loop stays pretty close to the road. There were a good number of wildflowers while I was there but not much else.
The eastern part of the loop stays close to the creek. However, there are only a few places where you get a good view. I did see a few snakes.
The parking for the trail is on Old Spicewood Springs road just east of Spicewood Springs Road. The trailhead is across the street and is just a short distance from the Bull Creek Greenbelt trail. You can easily walk under Spicewood Springs to get between the two, although there is no sidewalk.