I stayed 2 nights at Novotel Citygate with my family during our vacation in Hong Kong.
The hotel is closed to the Airport. You can take a free shuttle bus from Airport to the Hotel which is very convenient. Similarly, you can take free shuttle from Hotel to the Airport.
Room is big (comparing to the hotel in the center of Hongkong) and clean. Bed is comfy.
Staffs speak English fluently. They are attentive and polite.
However, it takes around 40 - 45 minutes by MRT to go to the center of Hongkong.
Overall, I would choose Novotel Citygate again when I visit Hongnkong.More