Maybe you get it done easy enough some times, but then other guests won't sign it because ... they're lazy, they're unsure why you're doing something separate from Airbnb, for any number of reasons. 

It's a game of whacka-mole but granted we're pretty good at it. 

This might sound rude (it isn't meant to be), but it makes no difference to me whether someone decides to do it or not.

Got it.  

Quote from @Abigail Joanna: Do the math.

The reason being they see no benefit and they do not understand it. 

Instead, start by sharing why you’re interested and ask questions to understand the seller’s motivation like, ‘Why do you think it hasn’t sold yet?’

Meet with financial advisers/wealth managers and see what other options other than real estate there are and how to best allocate / diversify. ie have you maxed out your TFSA?

I know what needs to happen with houses .. and I just do lump sump draws  normally 2 to 4 per project..

How well do you know this contractor?