I work in an office that is packed in with three people constantly talking on the phone, with other people or just otherwise doing their business. I find it incredibly distracting. Sure I can put headphones on and try and blot it out, but depending on my mental state or particular task, music can be distracting too. Be it Metal or Minimalism music isn't always the answer to getting the best mental state for your work. Also having the music cranked means I can't hear the phone when I'm getting a call. I can't even imagine working in a larger room packed with dozens more people.
I'd love to be in a properly lit and laid out office or cubical.