I reverted this changeset since it removed the building part tag. Buildings can be part of a complex design that uses multiple parts to complete. This is one of those. As far as I can tell, there are three building parts, a base and two towers. 

As nickswalker mention, to add the bike shop, just add a node where they exist with and address, unit number and other goodies like website, phone number and hours of operation.
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            Published using OSMCha: https://osmcha.org/changesets/145629142
            