Perfect for short stay. The location is amazing, there are a lot of groceries shops around, pharmacy, gym, restaurants and a WU nearby. Also, it's very close to Obelisco and Café Tortoni. The apartment is small, but it's enough for a couple.
There are also plenty of kitchen utensils, the bathroom is huge, and the balcony view is great.
I stayed for a month, but I work from home, so I was home most of the time, because of this it wasn't very comfortable for me, I wish the chairs were more comfortable, the heater could heat more and I had internet issues even after the company changed the internet equipment.
Ernesto is a great host, he always answered me when I need to.