the idea is, that you're supposed to crack it yourself, but...
look...:
under the pillow, then by the headboard.
under the drawers
the side of the bed next to the wall (it takes some time to click it just right)It is a while since I've done it, but i think it's a metal stick of some kind.
the fruit bowl
open and close the curtain several times
in one of the drawers is a cable for the cd player. attach, then open the cd slot.
put the rings in the top of the box, do the same with the metal bar.
play the cassette inside the box
when the film plays, there is a place to click. I've had it confirmed I've got the right place, but after trying about 50 times, and being no more than 1mm away each time, I gave up.
Good luck