The apartment was indeed located in a stylishly old building (the elevator made us feel like we're taking part in a black and white movie). The location was good, close to San Telmo and to main attractions. Macarena, the owner, was very nice and friendly and provided useful advice regarding nearby essentials. Note that the furniture was somewhat basic and that the kitchen, while usable, could have used some more pots and pans. We would have also liked to see real glass plates etc (rather than plastic) and elementary ingredients like sugar, oil and the like. That being said, the general experience was very positive and we would definitely go back.