The boxes with fuses for the electricity is inside the entrance door to the left.

The main water tap is outside the house, "at the bridge" between the house and parking. A cabinet (just when the stairs to the upstairs neighbor is).

The water boiler is in the wardrobe of the downstairs bedroom. There you can easily disconnect the power.

The outgoing drain is on the outside ("outside the kitchen/downstairs bathroom") in the ground. There is a plastic hatch on the ground as well as a hatch/aluminiumdoor on the outside wall.