Set up some exterior cameras and make sure it is in the listing that the property is protected by security.

One company went as far as to place a camera on their competitor's lot to monitor lot traffic 24/7 for 2 weeks straight.

If you can take pics with a better camera or hire someone, it's an investment that will always pay off. iphone is fine, but getting the better angles and quality will make a difference.

Since everyone including your painter, plumber, roofer... has a camera in their phone and perhaps they get cranky with you... don't expect to simultaneously retain your cake and eat it. 

Now he says he's putting up cameras and we are trespassing if caught on "his"property, we are going to jail.It is not his property by any means.

I have a friend who is a film maker, for example, who can’t watch a movie without computing camera angle choices and how they set up the shots, and did their post production.

Maybe buy a small inspection camera (or check FB marketplace) and drill a hole inside your base cabinets to check out the space under the cabinets but above the floor.

Simply Safe is cellular based.You'll need internet once you are doing vacation rentals so why not add that and security cameras now?

So Tenant B (who is male) pushed her and broke her security camera.

This may not bother you but it will when your apartment complex experiences a break-in nine months after the tenant leaves and bleach is poured all over the carpeting by a masked figure that knows exactly where your security cameras are.