This flat is really a very very nice place to stay!
José is nice, caring and super friendly. Everything went without and problems and he helped is with all questions. He organized airport transfer for us and gave us a good list of restaurants, shops and what to do in BA which was really helpful.
The flat itself is exactly as shown on the pictures and has everything you'll need for a good time in Buenos Aires plus a cool pool on the roof! As well the area is really nice. My preferred area in the city with lots of cool places to hang out!

But one thing was not good: It was very loud at night.
The flat is located to the street and the one window is somehow twisted and doesn't shut properly any more. So the street noise of the traffic was very loud inside the flat and even with ear-plugs it was difficult to sleep...