@Gregory87
My feeling here is, everyone with the exception of @Ann72 is missing the point. Talking about whether you would allow it or not, is not the starting point.
Much is gained about what the guest will be like by that opening dialogue, and enquiries which sets that initial communication tone with demands do not make good guests. I have discovered from experience, one request leads to the next and then the demands start and you get to the point where you will give into anything to get them out of your life.
For me, someone either likes what they see in my description, or they want to jerk me around.
In you situation congratulations Gregory you handled it well but, I think you handled it with the safety of your property as the focus. Guests can look after your property but still be a complete pain in the butt to deal with.
My motto is, don't rent to hagglers!
This is a bit over the top but, it is how I handled one a couple of years ago....

I am not generally as blatant as that and normally state that my accommodation may not be a good fit for the guest and suggest they look elsewhere. But I was aware through my community here that this identical request was sent to a number of hosts in my state, none of which resulted in a booking, so I made an exception here.
Within 10 minutes an auto response came back 'Stay not possible' .......
Mission accomplished!
Cheers.........Rob