From our experience it depends on the Housing Agency!

This would depend.

It all depends what you want to cover.

Probably depends a lot on location.

Tankless are a PITA.Tankless require descaling up to annually depending on water and if you fail to descale as needed the warranty is not enforceable.  

Well, it depends a lot on how much your tenants care about their Credit Score.Sadly most Collection Agencies I've worked with tried to "make a quick buck" meaning use scare tactics to make the tenant pay before formal litigation.

However, the specific details can depend on various factors, including the type of asset, how long it was held, and any applicable tax exemptions.

also consider the added mess from fruit trees, as well as the things they attract, for example in WI fruit not picked that starts to break down or drops and left to lay attract yellow jackets and other stinging bugs as well as the hazard of falling fruit, and staining concrete depending where they are. 

It's still great depending on if you're willing to put effort into your properties and willing to strategize.

If this is just a short detour - i.e. parents are on serious borrowed time - then the same thing can apply, or you can simply choose to leave the home vacant while you're gone.