Great unit and great location. Public transit can take you anywhere you want to go so there is no need to rent a car and you can avoid rental and parking expenses. Google maps will give you public transit directions, including bus and train numbers/lines. The unit we stayed in faced the street with large picture windows letting in plenty of light. The train does run outside over Wabash and there is some noticeable noise when the train passes, but less noticeable in the bedroom. I'd compare it to the sound of airflow when an air conditioner turns on. We slept well and the train was not an issue for us. If you are a sensitive sleeper or want to stay home and read a book, I'd pick a unit at this Sonder's location further back in the building so the train is not an issue. Overall a great experience and great value. I will search out Sonder's properties in the future for my next air bnb stay. Enjoy Chicago!