I love this under stair indoor "dog house." Its out of the way and it even has a window. What more could a dog want? I do want this somewhere,so that while we are gone,they can look out of "their window" and watch for our return.
A secret storage in a staircase can be a great hidden storage for bulky things that look unflattering when stored in full display. It’s the same space under stairs only hidden and accessed from the floor in the staircase. At: The Bottom Of The Stairs