Maybe they are visitors?

I have always wanted to drive a car that didn't scream "hes poor," but also not scream, "hes rich."

Short story long, both "scream scam" (can you say that three time fast?).

You may have to deal with pet, smoking, drugs, non payment, divorce, firearms, abusive tenants, physical damage, unemployment of tenants, physical disablement, disruptive children, disruptive visitors that come and stay, fire, natural disasters, management, all or some of the above and much much more.

I told the other tenants that there's temporary visitors.

No agent will know those details and those are the things that sell a historic house - having that part of history to tell their friends and visitors. 

She said yes, then mentioned she may have a visitor in June, I forwarded part of the verbiage from our lease, that says more than 14 days needs to be approved by landlord, she comes back and says that her guest will be there longer than 14 days, and then says, "I might have to pay for the application and put them in as occupant when they come"My question, I have several potential clients that have wanted to make an application, but I have told them that there is one person ahead, since she is now revealing this, how should I handle this?

In fact, that knowledge of the market where you live could be telling you (even screaming at you), "don't invest here...you can't make money here"

Personally I would replace in this order with more changes for higher end markets-1) Replace the old fluorescent kitchen light that screams early 90s that makes everything look terrible and pop in a few recessed LEDs.  

The whole point is if you found a screaming deal and the ARV was $1.5MM - the lender isn't going to give you 70% of that if your cost is only $550k.