The building probably has a plaque saying "all who look for food and song, for freedom and valor, may enter." A welcoming by default, if you will.

Come to think of it, I may have swiped that from an episode of Buffy the Vampire Slayer...
 
Webmetz
2016-08-16 13:12:57 
Thus, if I ever become a Vampire. I will carry a bag of plaques giving welcome to people who come by.
    

When evil spreads across the land, and darkness rises and the monsters roam. When the creatures of the night make beautiful music, and the things that go bump in the night go bump with greater enthusiasm. When the world is in peril and is in need of a hero...

These guys are, sadly, the best the world can hope for. These are the adventures of the heroes of CVRPG. They mean well, they try hard, and occasionally they do the impossible...

They actually do something heroic.