The apartment is in the heart of Palermo! The neighborhood is safe, lively, energetic with friendly people, and a multitude of amazing restaurants, bars, cafes and convenient stores nearby. The apartment is modern, spacious, A/C on both floors which works well, nice to have a bathroom on each floor, and decent internet speed (fast enough to stream movies). There is a small gym in the building and laundry room which is helpful since I was there for a few weeks. You'll need to buy laundry coins (40 peso) a block away at a mercado on Costa Rica Street. The 3 security guards who are there 24/7 were all friendly and helpful. Great bunch of guys! The subte (subway) is nearby, about a 10-15 min walk.
A few things to note: (1) Noise: There's a construction boom in Buenos Aires and across the street you'll hear construction noise early morning. Usually noisy at night during the weekend. One of the neighbors partied every Friday, Saturday and a holiday until 4-7am (lots of chatter and music). Being in a lively neighborhood, this was no surprise and ear plugs easily solved this issue. (2) Internet speed is between 10-15mbps, fast enough to stream movies. I would intermittently lose connectivity throughout the day which bothered me while I worked. Probably need to replace the router.
Overall I enjoyed staying here and would recommend it to others. Just remember to bring your ear plugs.