Bonus scenes:
Note: Some/all of these are patreon exclusive, perhaps reply if any work, or if any of this information is inaccurate.
Rosalia:
1) Talk to your roommate, she will give you some markers.
2) Leave the room and go right, past the reception and in the next area enter the room on the far right.
3) Interact with the white board and with the markers choose the pink colour and write "SOFT RUB".
4) Leave the room. Walk to the right into another long hallway, then go up and straight into the first door.
5) Talk to the pink haired girl. (note: This may cause the game to freeze).
7) Assuming that you have done everything correctly, she will say that she knows exactly what to do (Cue sex scene).
Ash and Cindy:
1) Starting at your room, walk left and into the next area, enter the first door after the toilets, the conference room.
2) Stand completely still and wait. After a while, a message box should appear.
3) Go down to the table and inspect it (Cue sex Scene).
Note: you may not be able to inspect the table at this point. If you can't, return the next day and try to inspect the table again. This worked for me.
Anastasia
1) Talk to the one-handed girl near the indoor pool. She will ask you to find a ring.
2) At the outdoor pool area, near the bottom right corner of the screen you will see a man in a red shirt. Interact with him.
3) While you spot the ring near him and pick it up, he will talk to himself about how he lost the ring and will begin to cry about his troubles.
4) If you can somehow forgive yourself for what you are about to do, Give the ring to the one-handed girl near the indoor pool. She will give you a titjob to make up for the horrible crime you have just helped to commit (Cue sex scene).
Icecream Girl
1) Starting from outside the gallery waiting room, walk right until you're in the long hallway and then walk down into the next area, then walk down once more. You should see a trashcan on the lower right side of the screen.
2) Interact with it to get the "Ice cream pass". This trashcan can also be identified by the fact that it is quite far from the trashcan that it is next to, whilst all others are right next to each other.
3) Give the pass to the ice cream girl, who can be found on the rightmost side of the beach, to play the basketball minigame.
4) Win the minigame by getting at least 5 basketballs through the hoop (easier said than done), (Cue sex Scene). Note: you will need to get the ice cream pass from the trashcan again every time you fail, you can only play once per in-game day, and if you fail, you could always just quit without saving and try again on the same day, effectively giving you infinite attempts.