We chose Mary & Alex's place because it was close to our daughter's apt, and we wanted to help her with last-minute wedding details. The apt is gorgeous, modern and comfortable. Unfortunately, we were locked out one night because we didn't understand how to open the top part of the lock. It was too late for Alex to respond, as he'd gone to bed. We ended up staying elsewhere that night. We were greatly relieved the next morning when it turned out to be something very simple. I recommended to Alex that he add a couple more details about how to open the locks on the door, but he thinks it's obvious. It was NOT obvious to us. And perhaps it was our lack of experience with Chicago-style locks and our exhaustion that evening that caused the problem. I'm sure that's the case. Alex is great and was very responsive every other time to all of our questions.