I rented Antonios Loft for 6 Weeks and it was a pleasure to stay there. The Los Condes area at the border to Providencia is very nice, clean and very safe. Around the corner are a lot of Restaurants and Bars, so you can choose/try every evening something new. And everything is in walking distance - just Great!!!! Also the Tobalaba Metro-station is in walking distance, which is nice because you don't have to drive with buses to the next Metro-station. Driving by Car is also possible , and you can get a also a parking lot in he garage, but i wouldn't recommend a Car in STG because the traffic is Horror.
The apartment itself is fully equipped, at the last floor and with a nice view. I felt very comfortable, but I have to say that I needed some days to sleep because the traffic noise in Santiago (doesn't matter where you stay) is quit much. But thats not Antonio´s fault, he is very friendly and very helpful as well.
Hopefully I´m going back next year to stay there again. I would book it again without any doubt. So BOOK it - NOW:-)