Just tried out the demo, art is gorgeous! runs very smoothly and easy to control too.
if i could give one suggestion (though I'm not sure if this is already in the paid version or not) is to maybe add the sound of faint footsteps when the maids move toward/away from you in the halls next to the office. Currently a bit too hard IMO to keep track of the maids with purely the camera (could also be a skill issue on my end). I think it would also add to the immersiveness/atmosphere.
Excited to see the game develop further, best of luck!