I'm not sure I can comment on the average starting salaries in relation to any other publishing company, because I haven't done much research outside of Bonnier, but from what I can deduce, they are pretty average, or above average. My line of work doesn't call for bonuses, but I do know that other departments do, as long as you are a hard worker. Travel requirements, again, depend on your position. There is a wide variety of departments in this company. I'm on the editorial side, and my travel depends on upcoming stories.
Honestly, the best part about Bonnier is how lax the atmosphere is. Everyone seems to truly enjoy their jobs, and appear to be very positive and outgoing.