On the 3rd day, they said there was an electrical issue (when the light switch in the bedroom is turned off all the electrical outlets turn off in the basement too).

Electrical outlets are few and at most one on a wall in a room, steps are really steep and ceilings are low in the upstairs bedrooms. 

Could not find sump pump outlet.

If I have something small (backed up plumbing, outlet not working, etc) I don't call the warranty company.

Should I hire a person to stage the property, I have some couches and a few fake flowers"?"

My theory is that the 4-plex would rent super easy, and that demand for the smaller, more affordable units, totally differentiated from everything else in the market, would be great, potentially even better than the bigger townhomes, but the sales outlet is only investors, and therefore less liquid and less profitable to sell in the short term.

We discovered active knob & tube wiring as well as ungrounded 2-prong & 3-prong outlets in use.

At least in Denver, it's the addition of a 220v outlet for a stove that triggers issues.

We also had the electrical updated with new outlets and canned lighting in the living room.

If you find out they attached the old knob and tube to supposedly grounded outlets thats illegal and even with no contingencies you may get some response--they aren't going to want to go back on the market and disclose.