Andrés' apartment is located in a big apartment building two blocks south of the metro station "Estación Universidad de Chile" of the Line 1 at the main avenue, Alameda (6min walk). A few minutes more and you're either at the Moneda (seat of government, with a big cultural center below), or the Biblioteca Nacional / Santa Lucía Hill. In 15min walking you're at the Plaza de Armas. I love the centro (it was my third time in Chile, for research purposes), and therefore it was super convenient to get around, all on foot. And if you need to get to Las Condes, or simply coming from the airport via bus+metro, the Line 1 is your main metro line. The neighborhood is very typical for the centro, with lots of small shops, but also 5min walking to conventional supermarkets (Líder, Santa Isabel). One block away, on Arturo Prat and Eleuterio Ramírez, there's also a shop that sells only vegan and vegetarian things without (plastic) packaging! Since a few years ago the immigration of Venezuelans has made an imprint on the city, and just across the street from the building you find a very popular street food stand with Venezuelan Empanadas, which are simply amazing and a real tip (I regularly brought it to my Venezuelan friends in other parts of town).
The building itself offers a 24h reception, a gym, and an incredible rooftop - Andrés does not advertise this enough! It features barbecue places to rent and a small swimming pool. It overlooks all of Santiago, and is simply amazing. When the sun comes around in the afternoon and heats up the apartment (this is really the only minor drawback of the location), you can either obviously enjoy the city or go up to the rooftop and hang out there. This is also were the laundry room is, I've never seen a washing machine/dryer with such a great view. Apropos, the washing process is easy once you topped up the laundromat card, for which Andrés provides instructions.
In general Andrés is super considerate and attentive, whenever I had a question, he responded immediately (via whatsapp).
As I mentioned, I already knew the city and chose Andrés' apartment strategically for work purposes, and it fulfilled all my expectations. The apartment is perfect for one person for a longer period of time, and perfect for couples travelling. The kitchen is fairly big and features new appliances (toaster, water cooker, oven, stove), and cutlery for 4 people. The Wi-Fi is fast and the TV gigantic (although I didn't use it), the little balcony just perfect to look out to the East - it is a great view, pure city feeling (in turn, not so much greenery).
All in all I would absolutely recommend Andrés' apartment and Andrés as a host, it was the perfect stay!