Martin's place is just as it seems in the pictures. He was very welcoming and flexible with my check-in. Throughout the stay he always made sure I had everything I needed and was always a quick message away when not at home. Overall the apartment is super comfortable. I enjoyed the full kitchen with all the amenities (something that tends to be hard to find here in Buenos Aires). The place is in a perfect location. It's nice and quite yet just a few blocks from everything you'll need: Groceries, Bakeries, Cafes, entertainment etc.
This place is awesome no matter if you're staying for a few days or for a month (like I did).