While we were on our trip we made a point to stop along HWY 1 to see the waterfall at Julia Pfeiffer Burns State Park in Big Sur. This spot, right on the edge of the state park is the perfect ten minute walk down a sidewalk to get the perfect views of the waterfall as it cascades into the Pacific.
If you're doing this spot, there is a parking lot along the high way. The walk is fully paved and has few steps. If you're photographing this spot keep in mind that the waterfall isn't super close to the sidewalk.
This is a good sunset spot, but the sunset sets opposite the waterfall, so you'd be photographing the colors casting light across the landscapes rather than directly into the sunset.