I think for me it would depend on what they did for employment and/or age, background education, etc. Is he/she a black banker, business man in a suit or a ghetto drug dealer axing me how much the rent is w/marbles in his mouth. But that would go as easily for a white person. If some white guy came w/his hat backwards and his pants dragging below his butt, scrambling to put words together to form a sentence, I’d be reluctant to rent to him, too.
I’ve had good luck w/students (depending on school). I once had a roommate from Turkey and she was really great. I had a female student from Japan and we stayed friends long after we were roommates, attending each others’ weddings. I’ve had some roommates that were not the best. There’s no girls are better than guys. Really depends on their jobs, I think. I had a guy who was great, buyer for a company.