I know the guy, for about 5 years now, a regular customer where I work at and he is also my Tech Advisor for my Surveillance Camera biz if anyone needs assistance right away.

So 2 things, 1-good cameras/alarm/lighting, 2-either you become very involved or get a manager and house sitter.

Put on some camera & record him in action.

.- I put a home depot sign in the front gate that the house is being recorded with camera.

I am certainly trying to delegate, but when I see a 50% mark up on pest control where the vendor didn't even get into every unit, a plumber charging for 2 hours when my cameras only show him there for 20 minutes, and not noticing a double in water usage from one month to the next, I have to be on top of the PM company.  

As for the news cameras...... that seems to be pretty common place now.  

We have also added cameras to our new Dallas office in our expansion of that location.

Sewer lines can be inspected by camera. 

My best advice to minimize your chance of this happening to you is to buy a couple of outdoor cameras, build a good relationship with your neighbors(They can see who is staying at your house and whether or not they should be there) and demand frequent and detailed records from your manager!  

Schlage Encode lock - Keyless entry lock for guests to easily enter the home and you can set a unique code for guests to only enter the house for the times of their reservation Ring Doorbell - Security camera to make sure the guests who booked the reservation are actually the ones coming to the property and that no unregistered guests are there.