Once the surprise was of a different kind. In one of the rooms in the old guest wing they noticed a door hidden by a cupboard; the centuries-old lock soon gave way to fingers pleasantly entwined in forcing it: behind it a long narrow staircase wound up in gentle curves of pink marble steps.
Describing a suite of rooms where it seems, according to the deliberately vague descriptions that S&M stuff wasdonen (allusions to whips, etc.).