You'll never get cheaper money than that which you are currently borrowing from the bank and inflation is ostensibly decreasing your payment every year.  

@Justin O'MalleyI didn't read every single post  prior to writing this but having taken a 401(k) loan I can say:- When I took it out, I said to myself "I will stick it out at this job for 5 more years to pay this thing back"- I took a decrease in take home pay to pay it back (obviously)- In retrospect I am glad I took out the loan as it lead to a good cash flowing property- I do not believe that the money out of my 401k would have been earning the same return that it is earning in my rental based on current market conditions- I am young enough (as are you) to make a fumble now and recover before I retire- (Not related to 401k) I am remotely familiar with the Denver market and believe that it is hyper inflated and would advise you to proceed with caution in that market especially if it means tying up your existing assets

It’s the fact their commission would dramatically decrease if my offer was accepted.

Cash flow increases on your savings (not decreases) with leverage.

There were clearly three or four previous (inadequate) repairs here.

If you do the monthly, your principal is decreasing every month and therefore the amount of interest you pay is being lowered.

You have to sharply increase your income and decrease your expenses to pay down the kind of debt you have. 

Helps decrease conflict. 

@Joe SplitrockInteresting analysis on the increase in taxable income but decrease in cash flow.

A local landlord is suggesting to post an eviction notice or notice to quit for last 3 days for late payments of rent and inadequate notice to vacate.