Fyi, the New Otani has a Beer Garden during the summer months.
I've been a few times in the past years and it's great for drinks with coworkers or a casual date; great view of the LA Skyline, too.
They serve some yakiniku items and other small dishes, and the food really isn't anything to flip over, however the ambience is great. If you've been to the rooftop garden, I'm sure you'd agree.
Consider bringing a jacket as it gets chilly at dusk.