Ernesto's apartment was perfect. We're a large family and it was spacious enough for all of us.
The check-in process was smooth. Ernesto and his staff were very accommodating, specially considering we did not have a working SIM in our phone to communicate with him when we first arrived.
The apartment was spotless and stylish.
The metro was right down the street, 1, maybe 2 minutes walking. Milan was about a 12 minute metro ride away.
If you're coming from the suburbs in the US and not used to being in a metro city (in the US or otherwise), the area may seem sketchy. It isn't. We walked around in the evening and morning. Always felt safe.
I would stay here again without hesitation.