I had an empty LTR that was unfurnished and they paid an extra 650/month and also paid to furnish it for a 6 month rental. 

If things are tight right now, maybe consider a side hustle or extra job until rent adjustments give you more breathing room.

Unfortunately, she frequently turns it off to save on electricity, which exacerbates the issue.i have also sent her extra radiator heat so can just plug in , but she refuse to use because she has to pay high electric bill.She complained about the unit's insulation and requested that we install an additional baseboard heater( whats the use if she doesn't turn on the heat) .

If you were able to pull out $500,000 in existing equity out of a paid off rental and disperse those funds to acquire 2, 4-unit MFR properties and had the income to support any future CapEx and the interest payments on your HELOC ( including the extra income to paydown the loan ) would there be any " gaps " or problems I'm missing in this situation where it would be a bad enough idea to not go through with acquiring more properties through a HELOC on 1 of 5 properties you own?

I work a crazy more than 40 hr a week schedule, and can't get there to clean it myself.Fair to dock their security deposit half a month (at least)?

It may sound nice to pay a 5% management fee but the extra fees can add up to be more than the other company that charges 10% with no add-on fees.

Many of us will gladly share our contacts - helping you AND that allows us to provide value to our contractors by referring them extra business.

@Christine Aledam LLC doesn't give any extra tax benefit for now.

buy a mult with 3% down and live in 1 unit and have the other 1 or 2 units pay the bills. rinse and repeat. get wealthy and be extra generous.

We have bought beds/dressers for the extra bedrooms and a dining set from Wayfair, they look nice but are pretty cheaply made.