I suggested looking for a co-host or someone that is currently successful at managing STR properties.

-How do get a co-signer on the lease?

Hi @Kristel Lim, Here are some tips to get approved for a higher loan amount1.Raise Your Credit Score to Get a Lower Rate.2.Put 20% Down to Avoid PMI.3.Have Compensating Factors to Increase Your Max DTI Ratio.4.Consider a Longer Mortgage Term.5.Add Other Sources of Income.6.Use a Co-Borrower to Add Income.7.Compare Loan Offers from Different Lenders.Goodluck!

I found this deal privately through a co worker, and negotiated.

For example, your old work location was 15 miles from the home and your new work location is 65 miles from the home.2) You had no previous work location and you began a new job at least 50 miles from the home.3) Either of the above is true of your spouse, a co-owner of the home, or anyone else for whom the home was his or her residence.

My wife also is a co-borrower on our son's home on a mortgage of about $200,000 which was purchased about a year ago.

Or maybe getting a co-signer.

Is there a co-renter?

It sounds like what you're looking for is a co-host, not a PM. 

Our daughter’s name is not on the mortgage even though she’s a co-owner.