hi we have about six months ago now, re done our bath room , similar size to yours, and , i can take some photos and email them to you , we have maximised space, and walls , put in a white stone bath under the window , it is a metre in width , with a cool water spout coming off the centre under the window we pu t afalse ledge in to sit , candles etc on , , we tiles floor to ceiling, off white , wall mirror cabnit with three mirrors , inset into the wall so its only sits out a we bit from the wall tiles , floating bath room vanity , so that it makes the floor space look bigger , . matching stone square basin sits ontop of the vanity to one side so plenty of room to sit all your bath room stuff when need be , seperate shower all tiled as well , with inset , shelves for shampoo etc, also , when you open the bath room door and walk in when you close the bath room door behind it next to the shower is a very narrow floor to ceiling shelvec for towels, now the hole is there we jaust havent got the shelves put in yet. , we gt loads of comments as the bth room dosent look small evn though it is , , most expensive item the sqwat extra wide stone bath , made to order basin / tap ware and shower spray thing ,oh and the white stone vanity which we had made to order as well , due to the sizing .

Is this who you mean? https://www.houzz.com.au/pro/jamesluxebath/luxebath All made in Indonesia gets me a bit surprised. But they do look amazing. How are their prices?

In addition to the above comments, here are a couple as well. Remove upstairs balcony, waste of money will rarely be used. I'd also have concerns of children climbing/falling off/etc. Remove sitting as its (almost) impossible to furnish and will just be a circulation area. I doubt it would be used even if designed perfectly, theres better places to be such as downstairs, over looking pool....etc.... Get 3/4 bedrooms upstairs instead of the sitting area/balcony. I'd also get another full size bathroom upstairs and reduce the downstairs to a powder room with a shower only. Make proposed down stairs bed 3 the lounge and shuffle the pantry kitchen area up into where the proposed lounge is now. That will allow the living/dining to also shuffle up saving floor area. Sitting and study is ok as is garage. Relocate laundry to perhaps be between pantry and powder room spaces. You'll need a proper Laundry close the household. oklouise's plan downstairs is quite good too. Have a look at 'evermore.co' they have a great website and some inspirational pictures. The current plan would be quite an expensive job and upstairs a bit ordinary as well. I'm not familiar with Toowoomba council regulations nor your budget/requirements. To have a cottage in Queensland is a great starting point. Thats the stuff dreams are made of!

This is just scary, that picture could be our ensuite expect for nib wall. Interestingly we are people who would use it at least twice a month for last 24yrs but we have beautiful country view thru pine forest and vineyard which is very private. So having cuppa an soaking is great for tired old muscles. Having said that in new house we are building its gone. Why is re-sale and maintaining them is a pain if your not using, not to mention water & electricity cost. The simplicity of a free standing is current trend but also think about cleaning around it, as its not as easy as you may think.