Thank you, Joan.
We really enjoyed our stay. The location is great. Close to the cafés, bars and restaurants of Lastarria and Bellas Artes, even Bellavista is in walking distance. Close to two metro stations, the red East-West-Line and the green line, which connects Museo de la Memoria, Plaza de Armas, Bellas Artes and Barrio Italia.
It is in the 7th (top) floor of an older building which makes you feel safer in case of "sismes" instead of staying in a 20 floor "torre".
If it gets cold, ask Joan for a heater.
Internet is good during the day, in the evening it gets quite slow. We worked during the day (Skype was no problem at all), watching a movie in the evening nearly impossible.
If you rely on good Internet ask your host. There was also Netflix.
Communication with Joan was very prompt! All in all, very recommendable.