Because of local economic drivers. 

Maybe a photo of the drivers lisence?

Interesting combination you have here - driver and investor.

My mother lived until the age of 96 and never had a driver's license.

To save two hundred bucks a month on a luxury rental they're already micturating what I would consider mad stupid money away on?

Oh Vaseline, you're just mad because your city sucks:You guys are actually on the same path Detroit was pre-collapse@Vasyl Magura

Also, if bad windows result in high heating bills, it will affect your tenants and impact your ability to retain tenants and drive rents higher.   

Figure out the GOI, estimate an expense ratio using what you know about operations, and throw a cap rate on the NOI based of the multiple of intangibles that drive rates in your area. 

To make it short by the end of it he psychially assaulted me and stood in front of my driver door not letting me leave until I gave him the title to my NEW car and keys to my old one. 

Now our driver was to have a student rental for our daughter, but I think the model worked fairly well, other than we had a few other criteria that a female college student who was also our daughter required.