I think you want to pair it with a classic management text (like Leigh Robinson's Landlording) as it is abit light there.

Pair that with a spreadsheet listing features like condition, bedroom count, bathroom count, etc. 

Mentioned above but those units can be very high maintenance rentals with lots of turnover.Student rentals can be paired very well in some buildings with short term summer rentals if the building is picked properly.

As we renovated units, we simply put a stackable HE laundry pair in each and did away with the common laundry room.  

pair of eyes.  

Trying to do a paired analysis of props that did/didn't have this feature in your specific market will be tough... that's not like bedroom count or a pool where every Realtor will even mention it on the MLS.My 'gut' FWIW, is that if it's only $1500 and might make it appeal to more people, I'd go for it.

Then you pair off the satisfied or released mortgages against the list of mortgages of record and you will be left with the mortgages still in play.Repeat this exercise for all Lis Pendens, Liens and Judgements (matching against satisfied and released) and you will be left with a list of open encumbrances.

You can pair it with as much debt as you like, but if you have a mix of capital gain and non-capital gain equity in the fund, you'll dilute your tax benefit when you sell in 10+ years.  

This is something I have had done for a pair for traveling physical therapists who want our place for 3 months.

(The difference between my hypothetical $35k and the known $12k leaves sufficient room to come out well ahead, it's not rocket science to buy at $12k and sell at $35k, and as we learned from 2008 paired with rule 34: "if you can think of it, someone can create the  accompanying financial instrument to sell on Wall Street" -- the guys that invented this stuff aren't waiting 5 or X or N years to get paid, they are getting paid now.)"