Super Mario 64’s hidden Level

Super Mario 64 - Wikipedia
(Game package).

Me and a friend were at my house playing Super Mario 64 when we decided to mess around with the wing cap and canon at the front of Princess Peach’s castle. We then discovered a secrete level that looks like another floor to the castle. If I remember correctly, in order to access this level, you have to hit every window at the exterior of the caste very fast except for the top window. Then you would have to hit the stained glass of Peach also very fast.

I hate how Princess Peach's Castle looks different in every game - New  Super Mario Bros. U

This scraped stage has a toad to greet you, he will say “Mario! I am very glad to see you. I have been stuck up here with the princess ever since Bowser took over. Well this is her room. Feel free to explore.”. This room looks similar to the first floor and has multiple rooms. The door to the basement is now just a single non-star door (in fact none of the doors have stars on them) that leads to what resembles a bedroom with red carpet and a bed that looks like the one from the DS version only twice the size and is less pixel like. The room that leads to Bob-omb battlefield, is now empty with a couple of chairs and a table. The Bob-omb battlefield painting is replaced with a painting of peach. The room that houses Jolly Roger bay is not that different. The painting for Jolly Roger bay is the painting in the Japanese version. There is also a kitchen (This must be where Peach does her cooking). There are no other doors and is replaced with just wall.

Layout of Peach's Castle - Introduction - Super Mario 64 | Super Mario 3D  All-Stars | Gamer Guides®
(Not the what I am talking about. Trying to get you to imagine what it looks like).

Once all three rooms are explored, Peach will now be in her bedroom. Press A or B (which ever button you use to talk or read signs) she will say, “Mario, I’ve been waiting for you. Let’s go eat the cake I made for you…oh wait! I forgot to make it! Sorry. If you want to talk to me, again I will be in my bedroom. Come back soon.”. We also saw a green creature when we left the kitchen area. It must have been non other than Yoshi! And you can enter it again using the same steps as you did the first time and everything is the same. Now I don’t believe in the “Every copy of Super Mario 64 is personalized” thing. and I think..no..Believe that you too can experience this hidden area. and this should be able to be accessible through the all-star versions as well (Ninendo just removed the Backwards Long Jump technique.)