Federica’s place is very well located (15-20 mins from Duomo, 10 mins from the subway). There are all sorts of amenities within a 5 mins walk (restaurants, supermarkets, cafes, etc.). The flat is very comfortable and clean, with everything necessary even for a long-term stay (we stayed only for 3 nights but still spent a couple of evenings in the flat cooking simple things and drinking wine). Federica is an extremely welcoming host and while she was available to answer questions at any time, the guidebook in the flat is a semi-professional crash course on spending a marvellous vacation in Milan :)
The only drawback I can point out is that the flat overlooks a busy street and the noise could be a problem for people that do not have a deep sleep. Even so, ear plugs would solve the issue and you would definitely enjoy your stay here :)