Old houses should have 1 extra socket in the master bedroom at the very least, because the master of the house was expected to plug a phone in there, back in the days. (my parents and grandparents all have one).
Incidentally, this is likely to be the furthest room on the furthest floor, so it can be a good place to add a wifi access point for coverage.
Incidentally, this is likely to be the furthest room on the furthest floor, so it can be a good place to add a wifi access point for coverage.