"Then it came to me .... a conservatory, the kind the Victorians had, lean-to, with white-painted brick up to waist level, and ornamental mouldings and gutterings. If I could have that, with a door at one end of it and an electricity supply for heat, a well-insulated, tiled floor, then I should have my room, private, inaccessible from the house, a room in which to work and sit and look out and think, and also where I could try to grow a fig and a vine, and have a lemon tree and some lilies in pots. I would put a bench along one side, for bringing on a few early beans and lettuces and other tender plants (though this was not going to be in any sense a greenhouse), and a desk-height table, running all the rest of the way round, for working at. A sloping roof, with slatted, bamboo shades, and careful ventilation everywhere, and all would be well in every season.... Such a room of my own... is the stuff of dreams."
That passage is from Susan Hill's lovely The Magic Apple Tree: A Country Year, and while she doesn't tell us whether she achieved her dream study at Moon Cottage, I hope she did - I'd rather like something similar. How about you?
(The picture is of a glasshouse on a grander scale: yours - with a castle - for around £2,000,000.)