We had a great stay of 2 months at Patricia's place with 2 small children. The apartment is old but in good state with a spacious living room and 3 comfortable bedrooms. A great feature is a terrace with not too much sun-exposure which we used every day. Air conditioning is also really comfortable for the heat in Santiago. Internet is fast for remote working.
The apartment also feels really safe and you can park your car inside of the apartment complex. The location is in the desirable hipster Ñuñoa neighborhood and you can walk to the Plaza Ñuñoa in 10 minutes.
There's also a big Jumbo supermarket (inside a mall) at only one block.
Patricia and Francisco are very nice and responsive hosts. Would recommend for longer stays!