I stayed in many Airbnbs in countries all over the world and always had a good experience - but staying with Benjamin and Marchello (the adorable cat) was outstanding. I felt welcome and at home the minute I arrived. The place is tidy and clean and lovely decorated, close to all Barrios that are on your list. Benjamin does everything to make you feel comfortable and enjoy your stay. The private bathroom is a nice plus, so is the tea, coffee and fresh fruit you are provided with for free. I cannot think of a better place to stay in Santiago.