K so here is a rough not very to scale drawing of the floor plan.
Looking from the outside from the front working from bottom left and going round clockwise
Window into Studio
Window into office
Velux into upstairs loo
Window into master bedroom
Velux into master bedroom
Window into downstairs shower/toilet
Door (yet to be amended) into Studio
At the back starting at the bottom right
Window into lounge
Eyebrow above balcony and end of landing (on other side there is the same eyebrow over the top of the stairs)
Velux into bathroom above bath (on the other side of the roof there is a same size skylight going into master bedroom)
Skylight into Mezanine
Main window for Shed room (above lounge)
Left hand window for lounge and the middle bit is one 4 meter wide window with glazed doors into lounge
Hope that puts it into context.
When I get home I am building a large shed / store for all the timber and other bits currently stored in the house. When that’s done I will be able to get some photos of the room layouts as they are now.