Extremely fast communication via WhatsApp. Awesome location close to restaurants and nightlife, central Milan, and some delicious gelato and crepes next door. Someone was on-time waiting for us to check-in and the apartment had all the little amenities one would need.
Like others mentioned though, there is no soundproofing around the bedroom window, so it does get a fairly noisy at night (trams, garbage collection, just people out and about enjoying themselves).
Overall though, great stay and location!