Had the opportunity for a quick overnight at JFK TWA. I'm normally a EWR flier, but the stars aligned due to an early outbound flight (which, realistically, I could have made w/o overnight at the field, but wanted to take the opportunity to experience this hotel).
I really enjoyed the stay - its clear this hotel is set up for quick overnights. Rooms are tight quarters, no closet, but well appointed and comfortable nevertheless. Had a cocktail in the connie bar, and dinner at Paris Cafe. Both were enjoyable. I didnt get any room pics, but it was a standard room, with a view of ... essentially nothing.
Outbound flight was T4, so a bit of a trek via the tram, but not bad at all.
I wouldn't hesitate to stay again, just for the fun of it.