Uggghhh... just read on another forum that an expat in the same city as me had a visit by the Tourist Police a couple days ago, checking the validity of his VISA. I guess they're going around and checking all foreigners in the area.
I really hope the owners of this house didn't inform immigration that a foreigner is living here. As long as they didn't, I should be in the clear, and I doubt they did. They don't care, they just want their monthly rent.
Really need to get this taken care of.