I want wardrobe area to be separated from the washroom in the .
If you are open to making a civil change you could make the access of the wardrobe from the entrance side so that the wardrobe space forms an 'L' with your existing one. You would have to build the wall behind the wardrobe, thus making you bathroom lesser in length.
Hope this suggestion helps.
This is an impractical design. The above suggestion by the respected member is better.
Also reconsider WC placement as it will be difficult to clean that small nook.
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