Some owners are willing to miss out on thousands of dollars just for a chance at a couple extra hundred dollars.

This is very uncommon, though I see folks posting about HELOANs for investment property.  

It would also have to be put up and taken down between each tenant and I don't know how responsive your PM will be to this extra work. 

I have clients doing 1 a quarter thats about the slowest to others that will go on a mini tear and I will help them buy 5 or 6 over a 45 day period then they go to work.But generally my busy folks will do 15 to 30 plus a year..

If so, are your amenities worth the extra price?

I’d plan for extra amenities like special decor or concierge services. 

Most folks are charging 10% of the rental rate for monthly PM fees. 1 months rent for a leasing fee and couple hundred for a lease renewal.

The extra cost to do two separate loans will be worth it, especially if you do not want to be stuck with the loan for a long time. 

While the image of yours I found seem to show the main entry to the 2nd floor at ground level, the older the prospective tenant, the less interested they are in a non-ground floor unit. 2) Using another part of the property as storage could limit interest and I could see that as a turn off with folks once they find this out.FYI, the listing I found on realtor.com makes no mention of the tenant not having access the entire property or the basement being used as storage.

And there are a couple of folks in town who are suggesting using installment contracts as workaround, as well.