Pros
Amazing, passionate coworkers, no matter which department you find yourself in or collaborating with. Senior leadership is very transparent about the direction the company is heading in and corporate strategy. Like most jobs, your mileage may vary depending on who your manager(s) is, but most of the marketers at Penguin Random House are just great people all around. The company is very respectful of personal boundaries and encourages everyone to take their (generous) vacation days, personal days, or take advantage of the many benefits that Penguin has to offer. Plus, books!
Cons
In the marketing department, you learn as much as you're able to within the first 2 years just by doing the work. It's very rewarding, but at some point you realize "this is it" and the only variation going forward are the authors you work with and books you work on. It keeps the job interesting, but growth (in terms of the skills you pick up) is quite limited, and most lower-level employees switch departments or leave for other opportunities.