We spent on week in Ana's apartment and it was perfect for us. The best part was that Ana was very helpful and answered all of our questions quickly. The apartment was very clean and has a kitchen with all the necessary items (microwave, coffee maker etc). The apartment is small, but is perfect for a couple (or in our case a couple + one child). It is in Recoleta, one of the safest, nicest parts of Buenos Aires and was within walking distance to many interesting places (e.g., Recoleta Cemetery, the National Art Museum, and many beautiful parks). We didn't use the metro, but just walked everywhere and used taxis which were easy to get from anywhere in the city. There are a few markets nearby and a bigger grocery store is only a short (~10 min) walk from the apartment. There is a place to do laundry across the street, along with a secure place to exchange US dollars at the blue rate (although this may no longer be relevant in a few months with the new government...). Buenos Aires is a beautiful city and Ana's apartment is a great place to stay to enjoy the best of the city.