depends on what your looking for ..
Downtown is good for extras .. so is Kamasultra and Gentlemens choice (though the girls aren't the greatest there) ...
then there's the hill top in Vaudreil .. and a few other places in the north for the real extras .. Around the world in three songs or less ... get the idea
If you want room services (starts at 120$ full service an hour) check out the hour magazine or Mirror magazine (they are free alternative newspapers available at most bars and restaurants in and around the downtown area)