Sebastian's place is in a great area, Palermo Hollywood. You can do everything walking. There are great restaurants, markets, bars and local shops in a couple of minutes from the apartment. It is also super easy to get to by bus and subway, but cabify and uber work well in Buenos Aires. There is a great vegan pizza place by the buiding and our favorite restaurant in the city, Las Cabras, is just 3 minutes walking ( it's cheap, super cool and has great food for veggies and non veggies). We didn't get to meet Sebastian but we met his wife, Vero, who was super nice and always ready to answer any question we had. The place is nice, has a very cool balcony and it's great for a couple of days in town. We were a bit disapointed with the wifi, that did not work very well and since we are traveling and working at the same time, that was a bit of a problem for us. But if you are just coming to the city for tourism and are not planning on cooking or working from home, it is a cool place to stay - specially because of the location. Safe, nice and full of life!!