In order to put the coin-op in I would install a floor over one of the crawl space access points (currently a closet) and put new plumbing in there.

"you need to have a bar to hang coats on it the closet" )3. you need to pay attention to, and check up on your tenant.

"I know you'd really like to put in a portable dishwasher.  

The lady has also gone to a doctor (don't know the reports) but all this smells like a law suit to mild some money.I spoke to the Mold inspector she used and he says there is Mold under the sink and in the AC closet.

Our state has been working on a 'portability' procedure so an applicant can apply once and then use the same report with multiple landlords without paying fees every time they go to a new complex. 

If it's a portable thing, and you don't care if it's removed, you can offer to remove it for a fee.  

Monday, we called all retail store - cannot find any available portable Swamp Cooler.  

That being said in the future you may want to keep a window or a portable unit handy for just such emergency services ..

., and you need to find out what the problem is.it's probably a grow operation in a closet or garage.  

Maintaining includes stopping leaks.Now, if it was a leak somewhere they could not see - like behind a water heater in a closet where they would not normally look to notice something - then I think they could argue they shouldn't be required to know what happens in a wall behind a water heater in a closet.But, a sink leaking and causing damage that can be seen - that was on them to "maintain" which would include letting you know about it so you could actually do the repair.As far as the shower grout - I think that's a murkier situation.