The apartment is very nice, comfortable and clean. Location is perfect and very safe, even late at night. It is just a few minutes walk from Plaza Serrano and on the other side a few minutes from Av. Santa Fe where you can get a bus or metro to basically anywhere in the city. If you are by any chance visiting BsAs for tango life, this is also perfect because it is walking distance to Villa Malcolm and La Viruta. :)
Really a great place, when I return to BsAs, I'll try to stay here again.