I think the point raised by mrpink and following answers touch a sensible point.

My follow-up question is stimulated by some reviews about an escort I visited some times, which allegedly claim that a spray message outside on the wall points to a prostitute in the building.

This, if true, might wake up the curiosity of the cops and this is not good.

I am a foreigner, so don't know Irish laws in detail. I wonder however whether visiting an escort girl in a private apartment she is renting can be considered a crime at all. Do I risk to be "interviewed" by cops on my way in or out of that apartment? In case, what am I obliged to tell them and what are the possible consequences? Any help will be gratefully welcome.

Lino