The place is perfect for 1 or 2 people. I went by myself and had plenty of space in the apartment.
The neighbourhood is very bohemian. There are a lot of parties going on. The weekend that I stayed there, I heard noises the entire night. Even though I closed all the windows, I could still hear them. They have Big speakers.
Very late at night is not safe to walk, but during the day, I walked to the center and most iconic places of Santiago.
One thing that could help, as I went during the heat wave. Air conditioner. The apartment's small fan is neither convenient nor powerful for the heat that Santiago gets.
The host was very nice and communicative. I understand that there is nothing she can do regarding the surroundings and the noise I experienced.