When we landed in the US after a 14 hour flight from Seoul, we had been awake for 18+ hours, and had another 8 hours to endure at JFK before our final flight home. Since we were flying from Terminal 5 (JetBlue) we had no Priority Lounge. Instead, we were able to visit the iconic TWA Hotel for a few hours.
There is also a small park in front of the hotel with benches and chairs.
The plane parked nearby – a Lockheed Constellation “Connie” L-1649A – has been converted into a lovely cocktail lounge.
The TWA hotel is a treat and recommended if you have a long layover in JFK and need to burn some time.