I stayed at Luciano's place for 6 weeks. I loved it!! The apartment is beautiful and in a great location. The Palermo neighborhood has tons of great restaurants and bars, and the subway station is only a couple blocks away and super easy to navigate. Taxis are also everywhere if you prefer to use them.
Favorite restaurants: lattente (coffee), chori (choripon), carniceria (modern parilla), burger joint (burgers), siamo del forno (amazing pizza), fukoro noodle bar (ramen).
Luciano also gives great recommendations and is always available for questions. He's truly wonderful and I couldn't have asked for a better experience during my stay!
One thing: Buenos Aires is very lively, even into the late hours of the night. If you are a light sleeper, bring ear plugs :) :) :) this didn't bother me at all, though.
Thanks so much, Luciano! You are a gem!