You'll find plenty of parking along Canyon Lake Drive. Try to park as close to the entrance as possible to avoid hiking uphill, and remember: wheels toward the curb downhill, wheels away from the curb uphill.
The park is rarely crowded beyond a handful of dogs and their owners.
If you're toting around tourists, it's a fantastic spot to see the Hollywood Sign.
There are a couple of picnic tables and benches tucked away in the shade. Consider bringing a blanket if you're searching for sun.
Across the street from the park, you can look out on the Hollywood Reservoir and the Mulholland Dam. If you feel like walking the three-plus-mile loop around the lake, start from the park: Head uphill toward the turnout, go right onto the dead end and follow the stone path down to the trailhead. If you're just interested in the lake loop, you'll want to drive over to the reservoir's northern end.
Since we were wondering the same thing, yes, that's a private vineyard on the hills that belongs to boutique label Hollywood Classic.