Thank you for your suggestions. I have now put together the following layout.
Living room: pendant lamp over the coffee table, 3 spotlights along the TV wall
Dining area: pendant lamp(s) over the dining table, 3 spotlights in front of the large bay window, ceiling lamp between the entrance to the living area and the dining table.
A floor lamp will probably be placed next to the couch.
Unfortunately, my wife does not like wall lamps at all. There is also no spot where I definitely do not want to place any furniture or picture.