there is a yellow sign.. on top of the entrance.. with the address.. very easy to identify.. which is the place.. lol.. also.. have to ring the door bell.. and there is sign on the door.. ok to press the bell or something..
The girls per your price, are mid-age China woman. Not real HK girl.
Younger China girl cost around $500 in Jordan/YauMaTei/YuenLong.
Hotel young girl cost between $700~$800 but all China woman.