Something like this may work. Note the changed door positions so that anyone in the bedrooms can visit the bathroom without disturbing anyone else in the lounge !

Sorry but I don't understand your pictures. You are talking about 2 bathrooms but we see only one floor plan. Is the 1.52M x 2.24M the 5 x 8 bathroom in your dilemma title. If so, can we see the floor plan of the 5 x 9 bathroom? Is the space with a small rectangle in the middle the extra 5.5 x 4.9 ft space you mentioned in your dilemma? Also 1.52M x 2.24M is in reality 5'0" x 7'4". This is 8 in. less. It can make a big difference on how to place fixtures in a bathroom.

Thanks a lot for your comment. I wouldn't exactly call it a walk in-closet. As you can see from the drawing, Its space provided for two single wardrobe (one on each side). Maximum width can be around 3.5 ft. The humidity point is quite relevant. The question is would it be possible to include a wet room in the space i.e. 6ft x 8.6ft. - considering I don't remove the dress wall. Wanted to get a sense on the possible layout. Thanks and look forward to your advise.

hi Rahul, you need 3 by 3 sq feet space for wc, as per layout you are getting it. i suggest you to avoid mirror in front of wc, as nobody wants to see themselves in that condition seeing themselves. also, door should open on other side so it will hide the wc. Your washbasin should be in right of counter as it give you more space to use for placing your things like trimming machine etc. for quartz go for mitter edge as it look thick without any extra line, which is most preferred today by Designers today. please prefer glass partition between washbasin and shower, as to segregate wet and dry area. and if you want to ask anything further or discuss about your design. thanks, Archiera Design, Delhi