We’ve done Park, stay, and fly at Crowne Plaza JFK and we’ve stayed at TWA. Our stay at Crowne Plaza was unmemorable which I think is a good sign for a simple airport stay. When flying JetBlue TWA Hotel was definitely the easiest for us. As a hotel TWA has some quirks so I’d recommend reading the TripAdvisor reviews before booking. Bottom line, if you’re able bodied and self sufficient you’ll probably be fine. If you’re looking for a high level of service and need assistance with bags, look somewhere else. Also if you’re not flying JetBlue the walk and air train from terminal 5 might be longer than the shuttle ride from offsite.