Full size fridge and freezer from 2015, forced ventilation fan (which is probably around 35-60w), one server (a repurposed office computer) and 2 WiFI hotspots, one of those Google speakers, a router (USG) and a PoE switch. Those are the big ones.

We didn't build the house, so there are all kinds of standby stuff (including needing smart lights for most lights, stove, towel heaters).

I didn't turn these things off because my mother in law is using the apartment a little while we are gone.

4kWh is 166W average, which is a refrigerator and a couple WiFi access points, a camera, a home assistant device, and some other random plugged in devices (i.e. cordless phone).

Not much even in an efficient house.