Gorgeous view, Not so gorgeous smell.
I've stayed at Walker Lake's 20 Mile Beach campground a few times and I'd say the site has a few pros and cons.
It has some remarkable sunrises and sunsets and it's easy to access places to camp (Though be aware there are some sandy sites that might be inaccessible without a 4x4 vehicle).
The downsides are that the smell of the lake itself isn't exactly pleasant, you're never very far from the highway so there's regular road noise, and depending on the season the mosquitos can be rough.
Either way it's worth stopping in to check out the views!