As a commuter who goes to Hoboken from Ridgewood every day, I find West Side Bagels to be a good place to go in the mornings (it opens at 5:00), buy a cup of coffee, sit down at one of their tables with a newspaper you can buy there and wait for the train (leave two minutes before it shows up---if you wait for it to arrive at the station across the street you might find yourself missing it).
If you go there for lunch you might be put off by the lack of air conditioning. The staff is personable. It closes at 5:00 p.m., so do not expect an open mike night, like that at the Coffee Beanery a few doors down.