We really enjoyed our stay at Barbara and Gaston's apartment. The location is one of the best in the city - walking distance to lots of bars and restaurants and close to buses and the Sube for travelling around the city. The apartment itself was clean and spacious and had everything we needed. Gaston was very responsive to messages and was really helpful in providing maps, booking a taxi for us and giving us lots of recommendations for sights and restaurants. We would definitely stay here and would recommend to anyone visiting Buenos Aires.