The address for the REU Conference site at the IUPUI Business School (BS building) is:
902 W. New York St.
Indianapolis, IN 46202
Here is a Google Map to the BS Building.
Here is a Campus Map
Please park in the North Street Parking garage (819 W. North St.) that is located on the northeast corner of Michigan Street and Blake Street. See this figure for a specific parking map. Parking permits will be available at check-in/breakfast. If you are a faculty or staff member from Indiana University, please use your IU parking permit and park in the surface lot (EM/ST spots) directly east of the parking garage.
The weather in Indianapolis in late July is quite warm. Typical daytime highs are generally in the 80s-90s. It occasionally rains, so remember to bring an umbrella.