Hi there, do you have the link to that professionals profile? Perhaps you can contact them through their profile to discuss things further.

Wow looks fantastic great work lovely old building

The upstairs 'sitting room' is quite difficult to furnish, almost no layout will work unless its 'floating in the middle of the space. The master bedroom layout while being large in square metres isn't ideal either. Both these areas once reworked will be quite good sized spaces that are usable. While they're at it have them rework the rest of the upper as its a very inefficient use of the space available. The downstairs ENS is a bit clunky but not as big of an issue as the upstairs area. Go back to designer and have them fix it. Once its sorted out, the upper area should contain the second living area you require as well as better bedrooms and bathrooms. Get them to add in furniture as well to the living areas to convince you its ideal!

describe the block of land (width, length, slope, views.position of north) the climate, the people who will live in the house, any special needs (work from home, disabilities, overnight visitors) budget, the average existing home in the area and what's on your wish list??