You have found the 4th e-nvelope!

If you are a bit tired from the search, here are a couple of videos to help you relax

The next hint will be the last part of this 12 minute long insane adventure.

The red envelope is hidden in your favourite room.

Some would call it the cave of falling water,
others call it the space of wetness and unfathomable irrigation

I call it the chamber of the porcelain throne

In the chamber of the porcelain throne there is the last red envelope hidden underneath the terrarium,
go and fine that last envelope so the treasure can finally be found!