So, you are working through 2 decision makers, not one.A Realtor can really provide you value in a transaction....especially your first one! 

However, there isn't a standard form like a NAR lease agreement; it just needs to provide some general information.

Quote from @Antonio Vega: Our primary focus is empowering real estate investors by providing up to 100% funding for their real estate projects.

Instead of continuing to hire remediation contractors you should hire a hygenist to come in, do some testing and provide a remediation plan.

Diversification Beyond the Stock Market: Real estate provides tangible, real-world value that helps hedge against market volatility—a crucial feature when building a resilient retirement portfolio.

So I try to thank them every time for providing information I would have to pay for, if I knew who to ask and who to trust.

So, things change a bit.If it is his personal home, there are more restrictions.For an investment property, if you take over his financing, read through the deed of trust (mortgage) and see how they handle transfer of ownership.

I should have mentioned that I am out of state in Colorado and I'm not connected yet to contractors that I trust to do a rehab.

But at the end of day you likely had a contractual obligation to provide shelter to the guests.

After several calls with some of the larger PMS providers, where I really took the time to dive into their products and compare features, pricing, and more, we've decided to go with Hostfully.