At the office , it 's getting tough to find space for tech tenants in River North .
He likes what buildings just south of the river are doing to attract the startup set ( creative space , exposed ceilings , similar amenities ) .
At the office , it 's getting tough to find space for tech tenants in River North , but he likes what buildings just south of the river are doing to attract the startup set ( creative space , exposed ceilings , similar amenities ) .