I see that people are mentioning HardiePlank as a solution.

I would say ramping up your screening process would be a far better solution than some legal slight of hand.I'm not familiar with a "holiday rental contract".

My solution is to use a voicemail box setup through Google voice.I would like to have it set so that it gives my greeting basically saying that I will get back to them as fast as I can if they leave me their name, number, and reason they are calling.

If they have little equity, they are open to the above solutions.

They're reliable, easy to use/monitor, and not too expensive for a quality system.

Monitor your property closely and keep local law enforcement informed of significant findings.

Multi owners tend to be more open to creative solutions than the average joe homeowner, so take advantage of that fact.  

This thread is a bit old, however as the first responder suggested I've seen and heard many times the best suggestion is to use Kilz on the subfloor, of course replacing the bad soaked through sections.On Tile - I've personally used baking soda/water and a scrub brush - was time consuming and hard on the back, however rubbed the baking soda with a bit of water into the grout, let it sit for 2-3 days, then came back and cleaned the baking soda up with water and a final cleaning with another cleaning solution - good as new and no smell.Guess it would depend on the severity of the problem for the solution.

Inform my landlord ASAP and try to work out a solution C.

I was still monitoring Facebook and seeing people with success stories.