When to go
All months of the year are suitable to photograph Lung Wah Hotel.
I recommend photographing Lung Wah Hotel at night to make sure the lamps are on. The lanterns add a vital element to the shot, so having them illuminated will take your composition to the next level.
Field tips
Try to bring along a good prime lens with a wide aperture. A tripod can also help with the low-light conditions.
I suggest using a mirror, piece of glass, CD or other reflective object to bring in beautiful reflections of the lamps and some funky fractional light into your shots. To experiment, just hold your mirror up to your lens and play around with different effects.
When composing your photo, use the hallway to create leading lines and the lanterns as natural framing devices to focus the eye on your subject.
Make sure to position the model in the center of your frame to evoke a sense of balance.