It’s a bit unstable for me. 

All the toilets or unstable and need new o-rings (according to the inspector) should i do that while there in there?

At least we have plenty of time to invest and make loads via REI in this unstable crappy economy, since we all know Obama can't/won't fix it.

I fear repercussions and payback as she is just that unstable.

A passive or out of area investor has a very difficult time with this asset class and in my ever it to be humble opinion is simply not appropriate for those folks to invest in.Most of the top tier turn key companies that work major metro areas have really gotten away from the lowest end rentals.. as their clients suffer and really they suffer as well because management is so difficult with these its a loser big time for them on the management side as well.Its just simple logic the cheapest homes go to those who can afford the least in rent or are on subsidized rent .. that demographic in the US is highly unstable and transient by nature.. and the landlord takes the brunt of it. 

I have mentally unstable tenants who doesn't want to move out.

Some say this is too unstable, which I agree with, but this also gets you a much higher ROI if you do it well.I think Valencia offers tourism all year round while Alicante strongly depends on the seasons.

Foundations slope when the soil underneath the footing is unstable (usually caused by water and inproper grading).

@William Thomas in this day and age I would probably have to go over to 30 year only for the fact it looks like things may become slightly unstable.

Problem with these is the roommates are unstable, and once I rented the apartment to 2 guys, then through a period of 3 years, got over 6 other roommates come and go.