Still open today.
When I visit Hamburg I went everytime into the Homo Gay Kino (theater US/cinema UK), Talstrasse 8:
It is a dark and filthy location. You have the possibility to go there naked and you can do what you want. Often a lot of dirty, filthy and bareback action. But you need patience, because sometimes silly old asexual men staying there. But when action is, than it is really wild action.
Everytime, when I am there I get rough fucked till the cum drop down my legs.