I live in Germany in an old house with a spacious and hobbity basement composed of five rooms and some nooks. There's even a second kitchen down there! But my washer and dryer are crammed into the first floor bathroom- I can prop my feet up on the washer while I'm on the toilet if I open it's door. Also, German kitchen sinks are inexplicably tiny.
one thing i was really pissed about in paris was that the CLOSET CONTAINING THE TOILET HAD NO SINK. NO. SINK. YOU COULD NOT WASH YOUR HANDS IN THE TOILET ROOM UNLESS YOU, IDK, FLUSHED AND THEN WASHED YOUR HANDS IN THE DAMN TOILET BOWL, LIKE SOME KIND OF SERIAL KILLER. NO. you had to EXIT THE TOILET CLOSET and GO TO THE SHOWER CLOSET and USE THE SINK THERE.
however. in a home with one bathroom. and multiple people. it is very good to have the toilet separate from the shower! bc if somebody is showering and you have to pee, you dont have to interrupt anything!
HOWEVER. THERE SHOULD BE A GODDAMN SINK IN THE TOILET CLOSET
because CLEARLY the ARCHITECT of these APARTMENTS has NEVER USED A HUMAN TOILET IN THEIR LIFE, MOST SPECIFICALLY NEVER HAD TO INSERT A TAMPON OF ANY KIND, OR WAS MERELY THE KIND OF PSYCHOPATH WHO DOESN’T THINK WASHING THEIR HANDS IS NECESSARY AFTER INTERACTING WITH TOILETS