Hong Kong's airport hotels fall into two categories. Those that are right by the airport, and those that are on or very near the Airport Express line, which runs between Central and Chek Lap Kok International in a mere 25 minutes.
First choice of the hotels right by the airport has to be the Regal, which is connected to the Arrivals hall. Grab your bags off the carousel, push your trolley along the air-conditioned walkway for a couple of minutes, and you're in the lobby. Naturally, this is even better if you have to catch an early morning flight, as it takes only a short while to check out and check in.
Only a short distance from the airport, the Marriott boasts a nine-hole golf course, a spa, a fitness center and pool – so it's a mini resort, really. It's also right next to AsiaWorld-Expo, the exhibition center. And just down the road in Tung Chung, the Novotel Citygate is hard by one of Hong Kong's main shopping centers.
The Airport Express is one of the wonders of Hong Kong. The station is only a couple of minutes' walk (via air-conditioned walkway) from the terminals, and trains leave at regular intervals throughout the day, stopping in Kowloon on the way to Hong Kong Island. Hotels above these stations are obviously in easy reach of the airport, as well as the rest of the city.