We had a great time at in Buenos Aires, and would thoroughly recommend Piper's apartment as a place to stay.
We arrived from an overnight flight. Check in was very easy, with Piper on hand to welcome us, and give us advice on where to head locally. She also gave us tips on where to eat, and sightseeing in town.
The location is ideal, within 5/10 mins walk of all bars/restaurants in Palermo Soho and near to Palermo Hollywood too. Also close to Plaza Italia and the Subte, which we made use of. The area felt extremely safe including at night.
It was nice to sit on the balcony for a glass of wine before heading out. The apartment block is quiet, with the balcony large, and partly under cover for when it rains. The kitchen is fully equipped (though we only used it for breakfasts), and Piper even supplies a bike for your use! The place is also very clean.
Would definitely recommend La Barata round the corner for a great Parilla! No shortage of places for a beer until very late at night, all nearby (though the location of the apartment itself is quiet).
Thanks again for a great holiday.