Which is not true and riskier to only gamble on appreciation I think.

I've lost money on deals that I took a gamble - Detroit homes with more taxes owed than the value of the property, and I've made money.What else can I tell you?

To attract travel nurses to your property, you would first have be conveniently located to the nearest hospital.

I stay at my property very frequently and that gives me sence of what are needed to make life more convenient.

I've been toying with the idea of automating my showings as well as allowing qualified prospects to view the property alone and at their convenience.

Otherwise, you are just gambling that the bank will not call the loan if/when they discover you have left the property (which probably states it will be owner occupied in your loan, if it's a primary) and are no longer making payments. 

While these companies can offer convenience, it's crucial to vet them thoroughly to avoid any unpleasant surprises like excessive fees. 

If they weren't so cheap and convenient to buy off the shelf (in case I measure or plan wrong) I would never buy them.   

Thus, I'm trying to find a convenient way to accept payments and transfer the payments to pay the mortgage. 

We can always hedge our position in stock/stock index by placing order derivatives that would limit our downside.I am quite mastering this aspect and this is what makes me more convenience for index investing (not stock but index).In syndication we're literally on the mercy of GP (which hopefully a good guy) and the actual asset itself (hopefully they purchase the right asset without so many issues).