We stayed in this apartment for a month- two adults, two kids (4 and 7). It was the perfect size for us. Comfortable, with everything we needed to cook at home, have movie nights, and explore the city. The beds are very comfortable, it's great to have a washer in the apartment, and we used the kitchen daily. The WIFI was very consistent and reliable.
We loved having the Subte so close and found the buses really easy to use as well. You can easily walk to Recoleta Cemetary and the weekend market in front of it. The neighborhood is very walkable and safe. The only downside is it's rather posh (Hermes is up the block), so the cafes tend to be pricier than in other neighborhoods.
Marisu was very responsive, and helpful. We wouldn't hesitate to book here again!