https://jobs.netflix.com/culture
It's not just marketing fluff. It really does a good job of reflecting what it's like to work there, and is taken seriously by everyone from the top down.
As I mentioned elsewhere in this thread, it's not a competitive environment, and I've experience very little politics and drama. Those things are explicitly counter to the culture.
As for long hours, while the work day can be pretty intense, the office is usually empty by 5-6pm.
Hope that helps.