I can’t recommend this apartment highly enough. It was spotless, comfortable, homey, well-appointed, in a beautiful old building and in a fantastic location! It gave me a sense of living in Buenos Aires for a few days. Guillermo is extremely responsive, answering all my texts prior to check-in and greeting me warmly. He let me stay after checkout time and happily stored my luggage until I left for the airport. I wouldn’t hesitate to stay here again.