I stayed at the apartment for 10 days and it was clean and comfortable. Unfortunately on one of the first mornings, i was woken by someone trying to enter the apartment. They had the correct door code and were able to open the door, but fortunately i had left the chain latch on, so they weren't able to enter. I messaged Abby (who responded promptly) and it turned out that the owner had asked building maintenance to come into the apartment to do some work, and had not checked with Abby whether someone was staying at the place. If I hadn't left the chain on, there would have been a strange man in the apartment while i slept.