The only colour picture I have been able to find of the front of the mansion at No 5 Broadwood Road. Colonial style with rounded corners to front facing NE to Causeway Bay with a large grass terrace before. The evidence that this was the front? In her book Looking at the Stars, Joyce Symons says there was a tennis court at the top of the drive below the 'front garden'. (The drive ran up on the right of the house). Also in the book it says the mansion had a large verandah which ran the whole width of the house, which I think is what we see here. The property had a large flight of granite steps down to the drive.
Also here, the access Road to #6 and Confucius Hall.
Thanks for this photo of the South China Stadium courtesy of moddsey and Flickr, see https://flickr.com/photo.gne?id=45168327112