The Black Bargeman is an inn or tavern located in Braavos. It is located to the south of Ragman's Harbor, southeast of the Sailmender.
A Feast for Crows
Dareon plays at the Black Bargeman. Samwell Tarly unsuccessfully searches for Dareon at the Black Bargeman. 
A Dance with Dragons
The Blind Girl has begged at the Black Bargeman. She recalls that it has a briny smell.