This saved me on a bad window installation deal. 2) have contractors in the trades that you trust.

A light to medium grey would look great on that house, especially with the white windows you have.

Would also be looking to exit the investment anywhere in the 5-10 year window. 

Also, a bedroom needs windows and usually a closet to be considered a bedroom.

The market seams to be slowing down and I fear I've missed my window but my renters are just now moving out and I need to do some repairs on the place.

- add central air or replace window a/c?

They go nowhere (they are just a metal box with charcoal filter and a fan, and there are no windows in the bathrooms. 

The agent had my dad's brother come to the property to quote the previous homeowner on replacing all the windows, and after the homeowner realized the cost of fully rehabbing his home he decided to sell as-is. 

Given that it's a smaller office space, you might put a sign in the window and put a listing on Craigslist.

It has been updated quite extensively since 2013, including 2 new refrigerators, new windows upstairs, complete remodel of 1 unit, and a new roof in 2015.