We had our maintenance guy stop by to look at it as we’ve had to clean hair from drains before.

We are also looking for recommendations for contractors and cleaning crews.

Yes, the hard stone is extremely durable, but the grout lines are the problem. 

Also, if you have shared spaces such a kitchen, you will need to have rules and decide how you are going to manage the cleaning etc. 

I would go with vampires, no carpet makes easier clean up and would rent forever!

We gave the entire home fresh paint, cleaned up floors and ripped up carpet (it has the original hardwood), and added new carpet to the living room and a runner to the stairs.

No one is going to buy a crumbling foundation house even if it is "fixed"... the 70% rule doesn't account for an underground oil tank that may have been leaking for 30 years  being at risk for 100's fo thousands in clean up fees.The 70% rule doesn't account for the house being next to a loud bar.STOP advertizing the 70% rule.

Goals for this deal:- secure precisely 3 units within 1 mile of Rillito Bike Path @ Dodge Blvd: easy to access all major Tucson road cycling routes- property layout functional for STR: adequate parking, separate backyard spaces, etc- walking distance to Brandi Fenton Dog Park & Tucson Hop Shop (best bar in Tucson)- pay house cleaner & landscaper to periodically clean primary residence out of AirBnB income (still working towards that!)

Point out you'll have insurance in place and will be getting the property professionally cleaned on a regular basis. 

Thanks  believe AirDNA includes cleaning costs.