Experience Downtown Chicago at Millennium offers luxury apartments in a prime location, close to major attractions like Millennium Park and CIBC Theater. The property boasts strong cleanliness and comfort ratings, indicating a generally pleasant stay for guests. Many reviews highlight the excellent location and comfortable accommodations, suggesting that guests appreciate the amenities provided, such as a fully equipped kitchen and seasonal outdoor swimming pool. However, some guests have reported issues with check-in and access, including confusion over early check-in and key problems. Additionally, there are mentions of inconsistent service from staff, which could affect the overall experience. While the property generally receives high praise, it's important to be aware of these potential hiccups that may impact your stay. Overall, this property seems to offer a solid experience, but guests should manage expectations regarding staff responsiveness and check-in procedures. The combination of a great location and comfortable amenities makes it a worthwhile option, but be prepared for possible minor inconveniences during your visit.