Tl/dr: book this Airbnb right now, you will not regret it.
The full review: I have stayed at my fair share of Airbnb’s, including quite a few in Santiago, and I can say without a doubt this was the best airbnb experience I have ever had. Aldo is a wonderful, generous, and communicative host. The apartment is incredibly well stocked; seriously everything you could ever think of needing for your stay is already here. The location is amazing, whether you’re here for tourism or work you can’t find a better place than Barrio Lastarria. Plus, the view of Santa Lucía is hard to beat. I can’t say enough good things about Aldo, whenever there was any issue with apartment, he was incredibly responsive and went above and beyond to make my stay the best it could be. He even brought over an extra space heater for the winter months. If you are looking for a place to call home while you’re in Santiago then do yourself a favor and book this airbnb.