Make sure you have a great exhaust system that actually vents to the outside, but honestly I think you will have mould growth anyway. If its not on the walls and grout it will be in the the vent itself. Is there anyway the bathroom can have some natural ventilation?

Hi fivedock No problems. I have tweaked it a little in response to the other rooms. The kitchen lights are moved out slightly off the cabinetry for better overhead lighting and added two under cabinet /bulkhead lights that are wall switched. Have also added a light for just outside the laundry for when you are standing there with washing. Back room can be on one circuit although I have shown two as don't know where you are placing furniture. We make the bathroom lights separate as shown and also do the fan separate. Our sparkie hates it but we like to be able to use the room without the fan automatically coming on. Have shown pendants in the master but that's up to you. I can delete if you like. On a side note, are the bedroom doors swinging that way deliberately? We would normally swing them opposite to that shown so that they open against a wall and you have clearance to walk around the beds. If this is to be changed then your switch locations need to be changed also. Cheers

depending on the size of the existing vanity it should be possible to have a similar new vanity or a custom unit made to replace the original but a chat with a plumber should be arranged to recommend suitable options and plan a schedule to remove the old and install the new, including any necessary waterproofing or tile repairs..btw careful removal could allow the original sink, taps and even the counter to be saved and recycled into a new vanity that matches the bathroom perfectly with the added option of being able to add different doors or drawers to the cabinet

Don't wish to upset anyone but the last two years of my father's life it was discovered besides and really bad aortic heart valve problem he also has asbestosis and his breathing was shocking, even on oxygen near the end he still struggled so badly it was horrible for him and just as bad for me to witness it so PLEASE everyone I agree 100% no room for error as the symptom don't show for years after exposure, whatever you decide make it on the SAFE side and don't mess about with your health, my dad was a strong sporty man his whole life and to see him end up like this was heartbreaking, if you can't afford it now find a safe paint and save money until it can be removed ASAP, I think right now get a few quotes too see what you are up for then decided what way forward after removal, good luck and take care