I can understand your concern. Sales executive often lure people with misinformation. Hopefully, with RERA there must be a more standardised comparable properties details available.
If you believe in directions, then you need to change the layout or at least interchange your rooms, Otherwise its ok unless you have some specific doubt.
And you can surely squeeze the bathroom walls as the standard width is 5', which is sufficient and you get some more space for your bedrooms.
For more direction related queries you can ask me.
hi, please tell me your actual requirements.