There is not much to be found out about this wine storage/stairs from the WD Architects. My only worry would be safety after a few glasses of bubbly. Although this is still an awesome way of providing access to a cellar.
10. DVD/Blu Ray Storage
If you have a large collection of DVDs/BluRays/Video Games this under bed system allows you open up space for a more interesting stuff and a home cinema in this situation!