I loved the stay with Isabel, the place is very convenient, clean, cozy and books are just sooo inviting to be read :)
The host is very hospitable despite being really busy!
The localization is very good, a couple of minutes from the metro station and in the heart of colourful Lavapies, in 15-min walk from Retiro. Sometimes you feel that somebody smokes not-cigarettes :), but it's tolerable :)