Just in case anybody is looking for a darkroom. I found a place in Central called Image Playground. They have a nice and big darkroom with a few enlargers. They charge 200HKD for 4 hours, but I think you need to bring your own chemicals.
They also sell some film, gear etc
From their website:
3/f, 11 Queen Victoria Street, Central District, Hong Kong.
Phone 2206 4738
i-m-ageplayground was founded in 2009 in Hong Kong, We are passionate in
photographic and film products.Our shop determines our mission to
introduce cameras, lenses, studio and darkroom!
Cameras & Lenses Shop, Darkroom Rental & Studio Rental
-Sells Cameras, Lenses and accessories....
Brands: Leica, Hasselblad, Rolleiflex & Polaroid, Lomography, Holga
$200/4hrs (Office Hour)
$450/4hrs (Mon~Fri: 20:00~04:00)
$500/4hrs (Sat: 19:00~03:00)
$600/6hrs (Sun: 12:00~18:00)
$55/roll (B&W film)
-Studio Rental (Portrait, Pre-wedding & Product)
$150/1hr (Cameraman not included)
$1099/2hrs (include 30photos, CD, A3+photo with frame)
Image Playground on FB
Another darkroom available fro rent can be found at http://www.keepingphoto.com/?page_id=26
Let me know if you have visited them before and know more details!
If you know of any other darkroom rental in Hong Kong, let us know in the comments.