I've stayed at Carolina's & Kique's for 3 days.
They are wonderful people, with whom I spent a wonderful time in Santiago. I chose the apartment and hosts to have a linguistic and cultural immersion in Chile. It was the right choice!
Besides being great hosts, having given me tips and lending me a subway card, they are also intelligent people you can speak for hours.
I really recommend staying at Caro's place, especially if you like to share your time with the locals and learn about their country from their own perspective.