The apartment has a good location and it's very well equipped. It's spacious and comfortable for 4 guests. One of the best things about the appartment for us was the heating, as Milano is pretty cold in the winter.
The only thing that was less comfortable was the street noise, especially in one of the bedrooms, which was pretty loud during all night (people talking and cars passing by) so it was difficult to have a good night's rest.
Otherwise, it's a good choice. Thanks!