ᐅ Bathroom Renovation 12 sqm – Ideas for a T-Shaped Layout – Is There Enough Space?

Dear community,

We are currently planning the renovation of a single-family house built in 1974. As part of this, a new bathroom will be created on the upper floor by removing an interior wall, resulting in a space of approximately 12sqm (2.73m x 4.485m [9 ft x 14 ft 9 in]).

I would really like to install a T-shaped layout. Unfortunately, I have no idea what minimum or recommended dimensions should be followed to ensure comfortable passageways, splash protection, clearances, movement areas, etc.

For the fixtures, we would like an open shower, a toilet, a double vanity, and a freestanding bathtub (at least 1.70m x 0.80m [5 ft 7 in x 2 ft 7 in]).

Do you think this will fit well?
How long should the shower wall be at minimum to prevent water from splashing out completely? How wide should the toilet privacy screen be to allow comfortable use? How wide should the passage (distance between the bathtub and the shower wall) be at minimum for easy access?

Do you perhaps have alternative suggestions for the layout? I am open to any ideas 🙂

Thank you for your advice.
Attached is the floor plan with my first draft