So, I now have all my furniture arranged sensibly, almost all my books arranged in single rows on shelves and other flat surfaces (barring one set currently in boxes until I build one last bookcase) and a lilac spare room.
Spare room with bookcases:
Living room with big chest of drawers:
Now I just need to (frame and) hang the rest of the pictures I seem to have lying about the space. At least I have floor again.