Renovations are expected to open in the spring of 2019.
The tribe expects to create 50 more hotel jobs through the expansion. Potawatomi Hotel & Casino, 1721 W. Canal St., has nearly 2,700 workers.
The hotel has been popular with casino guests since opening in August 2014, according to a tribal statement.
“By adding nearly 60 suites to the property with this expansion, we’re prioritizing our casino guests and their experience when visiting,” Potawatomi Hotel & Casino Chief Operating Officer Rodney Ferguson said in a statement.
“The rooms, along with the spa, will bolster the property’s reputation as an attractive destination for visitors in the region and beyond," Ferguson said.
The initial $97.5 million hotel was expected to expand the casino's customer draw from a 25-mile radius to a 100- to 150-mile radius, according to tribal officials.
Reports of a possible expansion surfaced in February, with hotel industry sources saying the hotel was performing very well.