I would also suggest letting them know what the requirements are prior to the showing, and possibly even allowing them to sort of fill out a questionnaire and making it known that failing to meet one or more of the requirements could result in denial of a tour however, everyone is encouraged to apply.Quote from @Emily Mohr: Thank you @Charles J Sabo, @Caria Mitchell, and @Matthew Becker! 

It can easily take 6+ months to find a motivated seller. - Just be prepared, because a motivated seller typically has a property with issues you need to be sure you can solve.

Also, I would recommend adding some sort of screensaver to the TV screen and I second that a professional photographer is the way to go.

It's a great motivator.

His office sent everything via email without any password controls or anything of that sort.

I was a guest at STRs for years, a quiet, early departing after tidying up guest and never got any sort of follow up after the check out thank you, no incentive to return.  

I know deals such as this get done all the time, but I seem to have little luck targeting sellers that are motivated enough. 

Dubai is a very transitory place where expats move in and out of, and this means lots of motivated sellers.

The ones that motivate you and keep you on track.

The home happened to be owned by an estate and they were motivated to sell.