We loved it and our guide was wonderful. The very small waterfall was disappointing, but everything else was great.
We highly recommend this hiking adventure to all in good health. The guide is very informative about the rainforest. It is beautiful and another view of Hawaii that I did not know existed. The boots are optional but we wore them and are very glad we did since some areas are muddy and we did cross a few streams. The waterfall is awesome. The guide stopped periodically and let us rest as he described the plants. He was friendly.
If you're looking for something to do other than lay on the beaches of Hawaii, this is it! Mattias was a fabulous guide and taught us so much about the rainforest! You will most likely be pretty wet when you're all done, but it is so worth it to get to the waterfall at the end! Beautiful place!