You're buying a specific property, in a specific location, in a specific condition, subject to local rules and regulations.

You can easily report them to the regulators if they do something fraudulent and can pay fines and/or have their license revoked. 

Short-term rentals like Airbnb can perform well in tourist-heavy areas like Vegas, but be sure to check local regulations.

He is the best and sells nothing.Your idea makes sense, but as you've seen with regulations, it won't work in practice for a short-term rental.I like @Dan H.'

However, if they are still considered a short-term guest under lodging rules, you may have more flexibility, though the specifics can depend on local regulations in Seattle.Since this can become a legal gray area, I recommend documenting all agreements, payments, and communication with the guest.

STR regulations have been a VERY hot topic here for the last year (and even beforehand).

Then you can make the appropriate moves when the wind is more at your back and there is less emotional involvement in your decision making. 

There's a good chance the issue(s) you face has already been discussed and answered.Ask questions in the appropriate forum.

But properties priced and marketed appropriately can still go under contract in a matter of days.

Is the property priced appropriate for a purchase that does not permit financing?