Everything always has a purpose. The lights under the stair reflect off the bottom of the open-riser stairs and provide light to walk up the stairs at night. Plus, they look cool. We did a linear uplight for the stone wall opposite to graze up that wall at night. Spaces can be more interesting when they're balanced, but not symmetrical.

Where can I purchase the bench?

Contact Robyn Scott. You can find her here: http://www.houzz.com/pro/rscott/robyn-scott-interiors-ltd Good Luck!

Thank you :)