I have stayed in the Courtyard (Marriott) a couple of times – very basic but clean, quiet, comp wifi and shuttle service. I guess it depends on your budget but for a brief overnighter, it worked well for me. A note of caution as with the majority of airport hotels in the USA, the shuttle to the airport can be a challenge. … no system for booking or queuing can result in unpleasantness at busy times although, to add balance, I have had the same shuttle issues at top rated hotels as well.
last time I used one of the Sheraton’s. Problem though is the Shuttle Bus… I had to wait 30 minutes and in the morning, had to take a taxi back to the JFK because the Shuttle bus was running slow/late/very full.