How about King Spa & Sauna in Niles? We'll shower, enjoy the pools and sauna rooms, relax, and eat lunch there. We'll also go grocery shopping at H-Mart next door afterwards.
From the King Spa & Sauna site: "King Spa & Sauna is Korean inspired with its Jjim-Jil-Bang spa organization. Jjim-Jil-Bang spas have become apart of Korean family and community culture used to relax and de-stress. The King Spa & Sauna has grabbed the attention of the American media and public with it's globally competitive new concept of a family oriented well-being sauna and spa, offering a complete sauna experience with 9 unique healing sauna rooms, acupressure massage for body and foot, and movie theatre."
King Spa & Sauna site: http://www.kingspa.com/c-about.php
King Spa & Sauna- 4.5 stars on Yelp: http://www.yelp.com/biz/king-spa-sauna-niles
Food Court Menu: http://www.kingspa.com/c-food.php
My number's (917)[masked] in case you're running late or can't find me.