I'm afraid your parents' bathroom won't work like that. Shower 100x100, tub about 80 cm .. that leaves 60 cm passage .. the shower door can't even open outward there. And in the toilet, you get claustrophobia ;)
163 cm for 2 rows of cabinets won't work well either, even if you only put carcasses without doors (I have that in my closet room too), that’s at least 112 cm, leaving 41 cm and those are all rough dimensions.
The guest toilet is also quite tight.
Parents' bedroom .. 288 cm wide, rough dimension .. with a normal bed that leaves at most 70 to 73 cm aisle width at the end of the bed.
It's all pretty tight and cramped .. sorry :cool: