Turret.

I've always fancied me a nice turrett. I'd line the walls with books (perhaps difficult to shelve round walls but I'm sure there's a way and anyway it's a fantasy, anything is possible) plant a huge comfy chair in front of the window (it'd have a window - a big one, it's a big turrett) and be contented forever...
*sigh*

Had a lovely afternoon at Maggie's flat. She did boss me about a lot and made me frame and hang all her pictures, but then she fed me - so all good ;)