We're a family of 4 (two little kids) and stayed for two weeks. The apartment is spacious, the kitchen is well-equipped, and the location is great: in a lively neighborhood, close to the Retiro park, and within walking distance of the city center. Communication with the host was also very smooth, and check-in and check-out was uncomplicated. It's probably not the cheapest option, but apart from that I can definitely recommend this place.