If it's 20 years old, you'll only be replacing it with one on it's last leg.

I don't think she'd have a leg to stand on. 

I'm convinced that Business Travelers are certainly more profitable you're willing to put in initial leg-work to get setup.

@Bill Gulley now you have given consent and Johnny stumbles on a mole hole you should have known about and breaks his leg and sues you  LOL... this never ends. 

Someone once told me that the richest person in the world takes a crap sitting on his toilet with his pants between his legs, just like you and me. 

If they don't agree to this then let them know you will file for cause, High traffic, ... business based, or not,, it's wrong and not part of I bet anything in your city code as far as running a business out of an apartment, even if it's not in your lease,, city code would be enough to use as reason.In the mean time,, post parking lot no trespassing unauthorized cars towed,, give out parking stickers for tenants,, no one in the lot that doesn't live there, and watch that lot.Call police ask for drivebys, any reports from tenants to you have them also call police, In this business sometimes you have to yourself camp out in the building,, I'm serious,, grab a chair sit by the entry door inside.. and protect your asset,, If they don't belong there don't let them in..

I earned this view the hard way after him paying his lawyer first, becoming behind, then getting his legs broken in a very shady incident with his new "girlfriend".  

They want out, and they don't want it to cost them an arm and a leg to do so.And tenants who do this, are not only low income tenants.  

These include changing the toilets to "high boy" (chair height/ADA) and bathroom safety rails.

Due to the tight rental market in my area, it is common for applicants to offer a higher deposit to get a leg up on the competition.Just make sure you screen her thoroughly and meet the pet.