We weren't planning to do this hike and ended up arriving quite late, but went for it anyway. I am so happy we did because walking though the Bamboo forest was one of my favorite experiences of the trip. The hike was a mildly strenuous, mostly because we aren't really hikers and also because we were rushing to avoid driving in the dark. We thoroughly enjoyed this trail and I would do it again in a heartbeat. However, we ended up driving the entire road to Hana back in the pitch black of night. Unless you're staying in Hana or somewhere along the way, I highly recommend giving yourself a good amount of time for this experience.
Tip: Bring bug spray and a solid pair of shoes/sandals - I was so grateful I wasn't wearing flip flops.