Overall I'd say this place was ok, but there are probably better options in the area. The best(and maybe worst) thing about this apartment is its location. It is within a 10-15 minute walk to the historic center, and a few blocks from a large local fresh market and metro station. The biggest drawback is the number of windows with poor noise insulation, so you'll hear sirens, honks and alarms at all hours from all the large streets/intersections nearby. Daytime the area is safe for walking around and is a few blocks from the Korea-town area of the city with many Korean restaurants and grocery stores.
The other drawback is that it's somewhat run down, and could use some maintenance to fix things like loose floor boards and the loose kitchen table. It did seem that they installed a new fridge, oven, washer/dryer combo unit and microwave recently, but the hot-plate system was old and only one side got hot enough to boil water. The mattress is also in need of replacement and the worn out springs made sleeping not so comfortable. The building doesn't have very good water pressure or very hot water, but not much the owners can do about this. Be careful taking showers, as the tub can be slippery and lacks any anti-slip strips. Oh, and only the night-time shot of the exterior views from the listing is from the unit itself, as the apartment faces the other tower of the complex so you won't see much else from the balcony except for an angled view of the river/downtown and towards recoleta and its hill a few miles away.
Otherwise, the neighbors are quiet, the internet was mostly stable and fast enough to work from home, and there's enough kitchen pots and dishes to make simple meals when you don't want to go out. Communication with hosts was ok, albeit mostly automated messages from their hosting system, but they did respond within the hour the one time the wifi went out(the main router is in another apartment nearby so I couldn't check to see what the issue was).