text: The tag you may be thinking of is 'covered=*'. I just reread the wiki for the term, the definition of which bolds: "it is usually open at least on one side".  Which I have used as an attribute for this node. So, if covered=yes,  no need to muddy things with 'layer=-1", as covered covers it. 
  
  I will remove the layer tag from this and a few other similarly situated bike stand POIs.  Thanks again for commenting, it was very helpful. 