From Incline Village, Lake Tahoe, head south along the East shore. This location is not very far out of Incline Village. Hidden Beach does shot up on Google Maps, there is about 6 parking spaces just past the last house as you arrive. This area is a short hike south along the shoreline but there are tons of photo opportunities in that area.
Parking can be tough in the summer as it is a popular spot with tourists and lately, with construction workers using the parking. A polarizer is highly recommended for shooting this area to cut through the glare on Tahoe's surface and bring out those blues and greens more.
Stitched panoramic photograph of boulders at Hidden Beach, Lake Tahoe. Photographed at sunset with fall colors in the foreground. Shot on a Canon 5DSr with a Canon 16-35L lens set at 16mm. A Lee polarizer and graduated ND filter was used. Stitched images were shot vertically, this file is huge.