It has no income, no assets, no credit.

Your accountant files the form 8824 at the end of the year and everything is documented and your basis carried forward smoothly.

We had no credit history in the US so most typical lenders wouldn't work.

For many of the deals that I'm seeing cash flow right now, they are negotiating seller credits and then I'll use those to buy down the rate that gets the investor the returns he/she needs.Personally, we just found a B property in B/C area and that cash flows nicely.

Account Closed do they have control of the heat or do they have to open windows to cool it down when it is too warm.

Yes, principal/interest/taxes/insurance and any HOA dues are taking in to account for the DSCR. 

DSCR loans won't use your income to underwrite the loan.DSCR loans are based off of down payment, credit score and either actual or market rents so it helps to supercharge an investor's real estate goals and net worth.Here's a bit more in detail about how rates are calculated for DSCR loans:1.

All you need is a competent tax accountant.

I'd like to modernize the experience for tenants of the properties so I am concerned with tenant features on the AIO platform e.g.; Turbotenant seems to offer more to tenants with the credit building feature and more options to pay.

Only an accountant would bring this up but it highlights one of the greatest tax strategies available.