What it is used for is unknown but according to the common views it was a brothel. It was a large two-story building including a kitchen, a bathroom and a toilet.
There are some very beautiful mosaics on the walls of this building. This Brothel of Ephesus was facing the famous Celsus Library. First this was a holy place and Priapus god of love and fertile worshiped in here. His father is Dionysus and his mother Aphrodite. Later this place lost its religious character and became a brothel where slaves had to work.