We stayed at Nicolas’s place for over two weeks - the Belgrano area is very safe, has lots of restaurants, cafes, and bars at walking distance and the metro is close if you want to move to other areas.
The place had everything we needed - and Nico even helped us get some additional items - and the Wifi works great but you also have the coworking space to switch it up if you need to. There’s paid washer&dryer in the building that was almost always not in use and you can get tokens a couple blocks away. Overall, great price/quality mix.
Nico was responsive and very helpful at all times - would definitely recommend and hopefully can come back soon!