Well even in the space of a few days thanks to this Sub pointing me in the direction of Rayon which is so much better than Room Sketcher I've made some progress. Renovating a farmhouse in Abbruzzo, Italy. Essentially have the first floor to convert, the ground floor is storage (where the animals used to be kept). Would really appreciate feedback on the design and layout. This is what I would call a second draft, but solved issues such as not needing a guest en-suite and a guest toilet. Main limiting factors are the window locations can't be changed. I feel the walk in wardrobe is a little snug, as is the laundry but still workable. We've also tried to minimise any changes to existing structural wall which are 30cm thick. Only removing one to open up the terrace area and windows to the main room. Remaining walls we will alter are non load bearing 10cm wall, so hoping this can help reduce costs. Top image is current layout, bottom is the draft design
