First, every investor has a different risk tolerance, financial situation and financial goals.

@Chris Purcell,You have to know your market, and if it's increasing or more of a "stabilizing" market where it wouldn't tolerate.  

@Zeliang Zheng, rent-by-the-room properties cash flow significantly in metro Atlanta and other Southeast markets, depending on your risk tolerance and whether or not you're willing to explore/consider the investment strategy. 

I think what would best suit our risk tolerance is handling a mortgage where we didn't necessarily need to rent out anything, yet have the ability to rent to reduce our cost of living.   

What's your risk tolerance, the time you can spend on real estate, the cash that you have access to, etc.

If someone asked me how bad it is, I would indicate different people have different levels of tolerance but the plane noise is loud enough to interrupt conversations.  

If one person stops paying and it's tolerated, It's more likely to spread within the house.

I feel pretty okay about it, but it's partially about your comfort level and risk tolerance (and probably the value of each property).  

The optimal plan of action is determined by your personal objectives, level of risk tolerance, and state of the market.Good luck!

It also depends on your risk tolerance for what makes sense.