The Witch of Prague by F. Marion Crawford

Unorna passed through a corridor which was, indeed, only a long balcony covered in with arches and closed with windows against the outer air. At the farther end three steps descended to a dark door, through the thickness of a massive wall, showing that at this point Unorna's house had at some former time been joined with another building beyond, with which it thus formed one habitation. Unorna paused, holding the key as though hesitating whether she should put it into the lock. It was evident that much depended upon her decision, for her face expressed the anxiety she felt. Once she turned away, as though to abandon her intention, hesitated, and then, with an impatient frown, opened the door and went in. She passed through a small, well-lighted vestibule and entered the room beyond.

The apartment was furnished with luxury, but a stranger would have received an oddly disquieting impression of the whole at a first glance. There was everything in the place which is considered necessary for a bedroom, and everything was perfect of its kind, spotless and dustless, and carefully arranged in order. But almost everything was of an unusual and unfamiliar shape, as though designed for some especial reason to remain in equilibrium in any possible position, and to be moved from place to place with the smallest imaginable physical effort. The carved bedstead was fitted with wheels which did not touch the ground, and levers so placed as to be within the reach of a person lying in it. The tables were each supported at one end only by one strong column, fixed to a heavy base set on broad rollers, so that the board could be run across a bed or a lounge with the greatest ease.