OMG, RU serious? Where R you from? Wait, lemme check....OK, up there by the Canadian border, eh? Upstate NY is a beautiful place. My uncle had a little summer place up in a town called Ellenville...it's off of 206. Anyway.
I don't know how to break this to you , but Jersey City is a sh*thole. It's just as dangerous and dirty as NYC. I assume he's been down to NYC B4, right? If so, he'll do just fine in Jersey City. Don't put your bags down and definitely keep your wallet in your front pocket...pickpockets can spot a yukle from a mile away.
I'm not being mean or anything like that...I grew up in the Bronx, commuted to Manhattan on the subway for 11 years AND worked in Jersey City for about 6 months. I know all about it. Good luck!