Lots of threads on this lately but many condo boards prohibit firearms in their units so dragging a safe through the lobby might garner a few odd looks.
When I bought my 245lb safe, I took the door off (door weighed 65lbs I believe) to cut weight, then tipped the safe and slid it into a SUV. Then took it home, wrapped it in a blanket and slid it down the stairs.
Hand dolly/friend and you can do it.