I guess after hearing the previous comments there is already a sale on the property so pledging the property as an asset would be impossible.

Any big park can make life hard if not impossible for a 3rd party landlord. 

As many have said or implied here, it seems like they are virtually impossible to get out of once you enter into an agreement, companies don't call you back, and the possible illegalities in their leases are almost impossible to fight in court because of the high cost of litigation, attorney fees, etc.

I don't think the tenant can make it impossible to show the place, to either new tenants or possible buyers.Don't mix business and family because you get crap like this.

I just want to know If what I am currently looking for is impossible or If I’m not looking in the correct places.

This makes it impossible to accidentally lock themselves out of their room unless they lost their key or made a copy to give someone.

Trying to do that without damaging anything is almost impossible.

It's not impossible, but it requires both patience and the ability to act very quickly when something pops up.  

Any home you purchase will get rented easily due to lack of rentals in all of Sacramento county.It is almost impossible to find a house where the rents will be 1% of the purchase price even with a duplex.

Making it impossible to sell, so they should demo the house and they will buy it cheaply.