I stayed several weeks as part of Sabbatical in Santiago. The place is wonderful, I felt really at home, and particularly liked the patio (a lamp in the patio would be a great addition). I did not meet Mario in person, but he always kindly replied within minutes after I had a question. The neighbour who takes care of the place was outstandingly helpful. The Internet initially had some issues, but worked much better after a quick re-start of the router. I would always come again and highly recommend this place.