Need!

Right now I have my sewing machine, cutting board, craft books and all my other little extras piled onto what I call a desk, but what is really the extension of a dining room table, which means I can't even put my legs under the 'desk'! This, which I found roaming through tumblr, would solve all my space issues! The only problem is, I rent my apartment. I wonder if my landlord would notice if I put this up....