As we knew that this trail was short, we planned to walk it at least twice. It took us about 12 minutes round-trip (from gate to deck) the first time.
On our second time down, we happily watched a little rabbit off to the side of the path. While we watched it eat, we had two other couples pass us - which surprised us, as we figured hardly anyone knew about this path.
We were a bit disappointed with the "observation deck" as we could not do much "observing" with the trees grown up so much! We wouldn't want them to be trimmed... but there is probably much more to see if you visit in the fall / winter.
The path is well-paved throughout, but we wouldn't say that the trail is accessible for wheelchairs (without quite a bit of help during the steepest parts).