[PC][1990-2000] Myst-like with a large mansion and stag people

Genre: Myst-like

Graphics/art style: 3D graphics, IIRC characters had recorded voiceovers

Notable characters: I vaguely remember humanoid characters with stag heads

Notable gameplay mechanics: Definitely first-person and you use mouse to interact with objects, but I do not remember exactly whether you move with mouse or with keys.

Other details: I vaguely remember one of the stag people shouting for being disturbed while taking the shower; IIRC it was also dark when you went outside the mansion.

Sorry about a very fragmented description - I played the game a very long time ago, and the fact that it was not localized from English (which I couldn't speak) isn't helping with clues on its name or what it was about.