I live very close to JFK library. It’s adjacent to our little Saigon if you enjoy Vietnamese food I recommend pho Le for pho and Ba Le for bang mi. If the weather is nice there is a pleasant beach along the harbor walk, it’s the best place to find sea glass if you want to take a souvenir home. The commuter rail will get you to Salem cheaper and likely faster than a rental car FYI. Enjoy your trip.