depending on the size of the room and accurate location of existing doors and windows everything is out of proportion and all the concepts are hard to understand because we don't know the correct sizes ... the baths only look about 1200mm long, or the showers are oversized compared to the other fittings and look too small for a standard towel and what is the size of the storage and what can be stored in it....you need to collect a examples of proper sized fixtures eg a bath could be from about 1500 to 1800 long and 750 wide plus enough space to clean around a freestanding bath, most toilets need about 800 x 800 space to allow for elbow and knee room but there's lots of different sized toilets for different situations, showers need to be about 900 deep and say 900 to 1800 long but depends on available space and do you want a walk in shower with or without a glass screen or a shower cubicle or wet room or Japanese style ...dimensions are easily found on any manufaturers websites but allways start with accurate dimensions of the existing space and try again

Amazing, can't believe it is the same space!! looks much more roomier. Well done!

i would probably try for at least 90cm but depends on the size and shape of the room, location of doors and windows and size and shape of other fixtures..can you post a plan of the room?

I would prefer to keep the WC separate to the Bathroom as you have 3-4 kids? who will get bigger very quickly, having a powder room downstairs won't help with the morning rush to school., But it's your house so I have added a pocket door between the WC and Bathroom. I have also taken that small robe space for an extra vanity in the WC/Powder room. No width dimesion given for the WC The ensuite could use that extra entrance space as a sit down makeup and hair bench for your wife.