Our overall stay went well. Xi was very quick to answer my messages, was very flexible with the check-in time, and made a thorough explanation of how the apartment worked and what we had at our disposal. The room was clean and everything was as shown and listed. Metro stop was one minute away from the apartment, about a 15-minute trip to the center via subway and a 10-minute trip by car. There was some noise coming from the street outside until about 3am on the second night of our stay. The apartment is located within a neighborhood with a reputation for being dangerous, although we had no problems and felt generally safe.