During the trek you will pass many little streams and waterfalls, some of which you can swim in, and which have great views. There are several steep uphill climbs the worst one takes about an hour on the first day, but it is worth it. Overall, because of afternoon rains, you only hike for about 3-4 hours per day.
Although the community atmosphere while walking is great, it is also fun to spend an hour or so away from the group while trekking to see more wildlife, particularly on the 3rd day.