The location is a bit far from the center (around 35 min by public transport), but the connections are good (metro, bus).
Although the building is quite dirty, the apartment is nice and renovated. It has everything you need, very organized and a supermarket in front of it.
I would recommend it for a longer stay in Milan. If you plan on staying only 1-2 days you'll "waste" some time with transport, then I'd recommend staying in the city center.