Sin, the Admiralty buildings are twin tower apartment blocks, on the river, but up the other end of the city from South Bank (near the Valley end).
Many many Brisbane pornographers have (or had) apartments in those towers, and also in Cathedral Place.
They were within walking distance of a bar which used to be Jameson's, and known to us a 'The Porn Bar'. You could walk in there any Friday night and be guaranteed to see someone you knew.
I never ended up spending the night at Admiralty...but I did spend one night at Cathedral Place when Hidden deemed me far too drunk to even put in a cab to my best mate's place...5 mins away.