We arrived late at night and had a bit of trouble finding the place as there are apparently two blocks with 500 numbers on the street. Make sure to go to the area of "Parque Forestal" or tell the Taxi drive (who was useless). Thus we never met Consuelo and Francisco in person but they were responsive when contacted and checked we are ok.
We choose the apartment as it looked quite spacious and indeed it was. Also the interior is quite nice and the location is good to explore most of Santiago by foot or with the metro nearby. The downside is, that you hear the street noise from 6am - 10pm to some degree. However it is manageable, but for somebody who is a bit sensitive it would not be the A1 choice. The bed was one of the most comfortable we slept in for a long time since we left home on the other hand.
We were not so happy with the cleanliness of the place itself. There was hair in the bed and in the bathroom upon arrival. Overall the apartment needs a bit of cleaning (windows, sliding door, bathroom sink, dishes,..) and lacks a bit of maintenance. Out of the two stoves only one was working (the other had a Post-IT "Do not touch, broken"), which was a bit inconvenient when preparing a dish with sauce. Also one of the blinds in the living room was broken / gone, allowing the people in the opposite tower to peep in.
There is no Tienda nearby, however a big supermarket. If you arrive late (like we did) make sure to bring some drinks and food from the airport.
Overall I would stay here again but would ask that the apartment is properly cleaned.