Ok so I'm a bit spooked out now, Our bathroom door just opend by its self. I know it was closed all the way because I closed it like 15 mins ago.:1zhelp:
Could be just a puff of air if it wasn't closed tightly. Either that or the former tenant may have died in there and just figured out how to open the door from the othere side.
Now, if you heard the doorlock open by itself, then I'd be worried. But since you heard the door open, it's just the door isn't set right on the frame, for one thing.