Based on your calculation, you retire in 10 years at the age of 49 which is much better than the average person.You will likely have a bunch of paid off houses and a healthy 401k balance.Seems like a sweet analysis.I am happy for you.

The app cannot guarantee a consumer is going to get this low rate.

Didn’t talk to me about the product or service as the advertisement claimed it was all about the consumer and being helpful, providing value, etc. 

Couple that with a Consumer who has been fighting inflation on gas and groceries, and as James mentioned, could be fighting more rent increases.

Rentals create cash flow, and that's what we want as real estate investors, but you need cash on hand for unforeseen circumstances.The AC needs to be replaced, that's $7K to $10K or more depending on the size of the house and if you have one rental, it will eat all your cash flow, same to replace a roof, etc, or if tenant trash the home, you need money to fix it again.To me personally a nice rental portfolio that is healthy consists about 10 units, so if you have an issue with a house the portfolio can cover the repairs and still healthy, but when starting you need to have cash on hand just in caseYes, there are multiple strategies you can use to hack your way to buy your first rental with minimum cash, but I would start wholesaling or fix and flip a few deals to create that cash as fast as possible

I found it really time consuming to measure for every single repair in a house so automated calcs as much as I could based on room sizes.  

This negative position can consume years of cash flow to recover.

Well, the work itself doesn't get easier or less time consuming if someone else is doing it.

Lesson learned pay others to do the time consuming labor.

And you'll have to make decisions on supplying linens and consumables, which many MTR guests expect to be included.