There are things which survive centuries like walls, and then stuff that slowly disintegrates and is a proper nightmare to change/replace - plumbing, electric wiring, general room layout with those thick structural walls, size/layout of windows etc.
I can guarantee you that electric wiring from 1970 is something different than that from 2010 (personal experience, sockets slowly failing).
Old apartment/house is definitely an additional maintenance cost and possibly tons of other inconveniences, and should be priced accordingly.
Hell, lots of times newer homes are more shoddily built then older ones.