Paul was a very welcoming guy, helping me on the first day to get my electronic metro card, showing me around were to get the things I needed and offered always help.
The apartment was as discribed and always very clean. However, its style suited the San Telmo district atmosphere well as most things were old fashioned and had not been renovated for a while (e.g. old walls).
The location was perfect, Bus lines and metro stations were within 2 minutes walking distance and also afordable good restaurants were close by.
In essence, Paul is a very nice guy, the apartment is clean, but old, and the location is close to be perfect.