Received via email:
The postcard most probably was taken from Signal Hill looking down onto Mody Rd and looking north across the side streets that connect Chatham Rd with Nathan Rd.
Knutsford Terrace is the long row of houses on the top left. Chatham Rd is on the extreme right with the road leading up to Gun Club Hill Barracks visible just off to the right turning road leading to Hung Hom.
The long road in the middle looks like Granville Rd. The mansion on the flickr set would most probably have been located south of Granville (probably Cameron) and may well be one of the houses seen on the right.