Al & Jackie were out of town when I arrived, but had sent clear instructions on how to retrieve the key from Angel, who is the onsite manager. No problems gaining entry and Angel or the hosts were easily reached. The apartment has a great location near the Zocalo, so easy to get around by foot or by metro. Lots of restaurants in the area of all price points, and close to pharmacies and an OXXO on the corner. The apartment is small but well quipped and the WiFi worked great. It is located in the middle block of a building, so does not face an external wall, so VERY quiet in this busy part of town; you will sleep like a baby! Happy to recommend and would definitely stay here again.