We do not know anything about the Judas whose house was on Straight Street in Damascus. In Jewish culture, hospitality towards fellow Jews in particular was encouraged. Judas was probably not a believer since Saul was taken to his home by his companions. 1
11 And the Lord said to him, “Rise and go to the street called Straight, and at the house of Judas look for a man of Tarsus named Saul, for behold, he is praying,