i can not figure out the piano safe please help

You have to play "Twinkle, Twinkle Little Star." If you have no idea how to do that, enlist the help of the neighbor's grand-daughter, of somebody. (It's not in the usual key of C, play it in G.)

Click on the picture on the wall. The clue/keys are behind it.

Oh yeah. And if you find the Tape Recorder on the other side of the room, play it and hear the melody.