This is truly a masterpiece, no kidding. The whole story is open to various interpretations and the dark atmosphere (which is not the cheesy-spooky thing nor the jumpscare/stressful kind) is absolutely godlike. Extremely cured in any detail from journals to voice lines.
Talking about gameplay, i would say it surely aged but it's still pretty enjoyable, it's just not going to be a pain if you just want to a taste good lore with some good MIDI soundracks.
Puzzles are not too complex apart from some that will take some time, and almost everyone of them makes sense (with a few exception, i must admit).

+ a plus goes for the sounds, in my opinion the voices fits in perfectly in the game ambient. So I would suggest playing in english and helping youself with subtitles. Music is good and will get stuck in your head for some time.

Do yourself a favour and play this as soon as you can, it's going to be a dollar or so during steam sales. Absolutely worth it. 8.5+/10.

Also Claude Florentine is damn ♥♥♥♥♥♥♥ good looking, no ♥♥♥♥.