It is an easy 10 minute walk from the parking area to the falls. But the trail is not all that clear. At first the trail is easy to follow, but soon reaches an open area, where you have to make your way over granite rock, and the trail becomes indistinct. But it is not hard to find the falls because you can clearly hear it, and eventually you will see it from a distance away. When we were here on a Sunday afternoon in early May, there were surprisingly quite a few cars parked at the trailhead.
When you reach the base of Bassi Falls, you will be treated to an awesome view of the entire 120 ft. cascade. Later in the summer, there is really not much to see, as Bassi Creek becomes a mere fragment of its former self.
For more info, see my website.
Note: this hike is only in the newest edition of "California Waterfalls" (A. Brown) below.