The street address is 24701 Del Prado, Dana Point, CA 92629. From I-5, take the Pacific Coast Highway (PCH) exit and drive 1 1/2 miles north/west toward Laguna Beach. Pass Golden Lantern, take your first left, then turn left on Del Prado, which is a one-way section of PCH going south/east.
Just look for the sign at 24701 Del Prado,  Dana Point. - Map    (southbound PCH at the corner of Golden Lantern)
For a more detailed map, look below.