We went through top to bottom added a bath and finished off the unfinished basement.When we went through the house before purchase we noticed a duct taped toilet flange in the concrete slab that was still set up from the original pressure test. also a stub out for the lavatory sink.

They will probably fine the landlord , seize his property ,and business and give you a new shiny toilet with a can of air freshener . 

Does the moisture in the air have a way to get out of the bathroom?

If it doesn't, and your ROI is left gasping for air, wheezing on the ground, your first eviction will finish you off.  

No air conditioning. 

Hi BP Community - Has anyone had any experience doing short-term (Air BnB/VRBO primarily) in a college town?

The home has never had central air.

For instance, I prefer shower rods that are held up by spring pressure rather than being screwed to the wall. 

We find out that our heating system was in dire need so we take out a small home equity loan to buy a new heat pump and a brand new oil force air funace as a back up system bought all new had new duct work put in. 

The money will go somewhere and it is most likely treasuries, putting even further downward pressure on yields.