In the hotel lobby after entering the main doors, you are expected to walk up either of the two staircases and have the stairs fall out from under you. If you jump and crouch over this part of the staircase, you will instead pass over the trigger that sucks you downward and instead get a small boost forwards to the 2nd floor. This skips the basement section of the quest.

In version 1.1, you can enter The Asylum for the first time and then leave. You can then complete the Ocean Hotel quest and return to The Asylum. Jeanette will now have the pendant conversation with you instead of her introduction on the floor of the nightclub and then go upstairs to argue with her sister.

After returning from the Jeanette pendant conversion or after completing the painting slashing quest, you can skip going up the elevator by going to the 2nd floor and crouch jumping into the roof. This will hitbox shift you into Therese's conversation, which automatically draws you into her because she is mad. You still have to ride the elevator down.