. --- We were sued many years ago, along with the owner, because tenant claimed owner's contractor sexually assaulted them!

There are a lot of jurisdictions (most of the West Coast now) that include marital status, sexual orientation, and others under their fair housing regulations.

What if there is sexual-harassment involved? 

It blew my mind but I suppose you get used to what's considered "normal".Having actually lived in Hollywood, West Hollywood and downtown LA, your comment about the sexual nature of the assault you suffered isn't typically seen in homeless communities.

The judge in charge of the case was accused of secretly having sexual relations with an attorney arguing a case before her and was suspended while under investigation.

Sarah thinks that fred is sexually harrasing her.

Many women fall in love with sexual abusers because they seem completely normal (when not abusing).

This is backwards, since women tend to be physically smaller and thus more vulnerable to attack, and are the overwhelming target of sexual assault. 

You would need to confirm he is not on the sexual offender registry because that would be a for sure no, and then consider whether you would rent to him if this was on the market for a week.

Anyone who pushes back against such law/regulation is probably hiding something, doing drugs or have sexual intercourse there.