I stayed at Nicolas' apartment for some months, during which it started to feel like a home. The apartment has everything one might need for a longer stay, from a fully stocked kitchen to plenty of storage space in the bedroom. It's located at a great spot in Recoleta, with all the necessary services close by. It's well decorated, the balcony is absolutely lovely, and the building is well taken care of. For those who might work from the apartment, the internet to my experience was fast enough, and I don't recall experiencing a single issue with it during my stay.
Nicolas as a host was also excellent, and was there when I needed it the most, and I very much appreciate his time for hosting me in Buenos Aires during these months. Communication with him was a breeze, and he'd usually quickly to my inquiries, and often giving tips on what to do in the city.
I would wholeheartedly recommend the apartment for anyone who plans to stay in the city for long periods of time.