Beware of things that go bump in the night

This is weird. There is no one living in the apartment above me now but I still hear footsteps. Are there ghosts up there? To make matters more puzzling, the apartment was stripped of all of its furnishings a little over a week ago and knowing the owner of this building as being one of the richest people in the city but also one of the biggest skinflints around, it is puzzling that they would do such a complete makeover for a new tenant. New carpeting I can see but not new kitchen cabinets, sinks, etc. There is something really weird going on here. Should I be afraid?