Group of 5 left Tacoma 7:15a, arrived staircase trailhead 9am, hot day so hiking in mostly shade along river/rapids was fairly cool and few others on trail until our return at about 2pm.
Rapids, waterfalls over large boulders, deep pools seen; a few wildflowers along sandbars. No blowdowns or problems to speak of, until end of main trail about 2 mi in, when trail became difficult to negotiate, we turned around, and had lunch at large sandbar, gorgeous view of mtn across river, ducks,waterbirds, dragonflies. We waded in backwater pool there. Great turnaround place too.
This is still a lovely hike, but altho elevation gain is low, 'cumulative gain' much more, so harder hike than was expected, those of us who are fairly short found the high steps over boulders, large roots,etc, quite a challenge, but worth it.