The apartment is perfectly situated in the center of town near the Santa Ana metro stop, easy walking distance from many restaurants, shops, museums, and cafes. The apartment is also very well appointed, with a very comfortable master bed (plus another two twins in a separate bedroom), a great bathroom with a nice shower with full pressure and constant temperature (probably not a differentiator for Santiago apartments, but a welcome change from more remote areas of Chile from which we had just come), a kitchen with all essentials, a washing machine, fast internet... There were little elements, like plenty of power socket splitters, that showed the thought that went into setting up the space. Even though there is no A/C, there are two fans to create a draft through the apartment - which was comfortable even during the summer. Traffic sounds are moderate: recommend ear plugs if you're a light sleeper and will be keeping the windows open.
Elsy was an amazing host. Super easy to coordinate with through the Airbnb app - quick responses, excellent English. She was very helpful and accommodating (late check-out), and even provided nice touches like fresh grapes she picked from her farm earlier in the day.