But DA2 didn't let you use it, IIRC. Then again why do you need a whorehouse when you have Isabella, same number of VDs.
You can hire bunch of male and female prostitutes to entertain you in the brothel (The Blooming Rose), so I am not sure what you mean with "DA2 didn't let you use it"?
"IIRC"
Anyways I never used it. Prostitution in games is stupid, paying for something that doesn't improve your stats.