Osvaldo & Lina are very nice hosts. The apartment was well located in Palermo and suited our needs for a 3-day trip to Buenos Aires very well (restaurants, bars, cafes, supermarkets, metro station etc. all nearby).
The apartment was as pictured on the fotos. Nicely furnished with all you would need for a short stay in Buenos Aires.
One tip for future guests: In case you are staying with more than one person make sure you get at least two keys for the front door (because you always need the key to open it - also from the inside).