Can't say enough about this place and the owner.
The location is in the Old Town area - walkable area with shops/restaurants/bars, etc. (Recommended: Twin Anchors for dinner and Kanela for breakfast, both a short walk from the apartment.)
The entry is easy, though leads into the main bedroom which is a bit odd, but worked for us no problem.
The apartment was very comfortable, spotless and high end fixtures, especially the shower. There's even a nice private courtyard in back, though January in Chicago made it only for viewing this time.
The owner, Donald, was really helpful in advance with details and instructions and always immediate to respond. 5 stars for that.
The listing noted 'free street parking', but it's the city so parking on the street is pretty much permit only or find a metered spot on the nearby busier street. We opted for the garage around the corner and it's about $20/day. Not bad and in no way a deal breaker. The train is nearby for easy travel into the city.