Alpha -> the living room you can enter the terrace-balcony
Beta -> terrace-balcony is acccessibile only from bedrooms
See pdf Sewer systems kitchens to existing waste stacks apartment relevance. There are no servants. The pipelines will be placed under the screed with a proper slope.
The alpha solution provides for the second / third bedroom in the vicinity of the living area so that it can be also used as a study or to accommodate a kitchen in substitution of the kitchen that in any case in all the solutions can be isolated from the living with the sliding glass walls.
The corridors / entrance areas are appropriately screened from the living and welcome the bookcases.