I stayed 1 time in Chunking and twice in Mirador, to be sincere i never saw something interesting there, just once in Chunking i got 2 ladies (they looked South Asian) smiling at me on the elevator but i was returning from a double 141 so i was not interested .
Also in Mody Road you can find some WG there at night, near 7/11 just few steps from Nathan Road, but they look dangerous, so i will never try
Also both Mansions are strategically placed to reach many mongering places, on my personal experience i got decent rooms for about 300 HK and if you form a good rapport with owners, you can get benefits like giving you a double room at no extra cost if all single rooms are busy, also they are safe places, i never felt afraid about my safety.
Hong Kong.....i love you