Werner:

Under Miscellaneous use the model Box . Make it 60-65 cms deep, 4 cms high and as long as is necessary. Of course you can give the box a texture. Give it the same elevation as the height of your base cabinets, or slightly less if you don't want the stove to disappear. The only problem is that the sink will (partly) disappear, but you can avoid this by using smaller parts.

Hans