Senora Isabel is a charming person, and her chalet is of exceptional cleanliness. The location is great, too. There are plenty of supermarkets in the vicinity. The metrobus station is within a walking distance. Taxquena subway station is also 10 min walk from the house and at the other end of this line is Centro Historico and Zocalo. If you take a light above-the-ground train that starts at Taxquena you can get as far as Xochimilco park, where you can get a boat to explore the canals and the island of dolls. UNAM and other universities` campuses are also pretty close.
Overall, I spent 9 lovely days in this place and I would recommend it to pretty much any traveler.