I stayed I Milan for three nights (two at the start of my trip) and one at the end before my long flight back to the US. Upon arrival I instantly wished I had found their airbnb for the first two days of my trip. The location cannot be beat in the Brera neighborhood and the apartment has several locks to make a solo traveler feel safe and comfortable.
They made check-in and check-out very easy for me by providing extra detailed instructions that I was able to follow easily while only relying on wifi. The flat was very clean and modern. This also included a washer and dryer (the dryer isn't as common in Europe) where I could clean clothes from my long trip.
I highly recommend this flat to anyone staying in Milan for a long or short period of time.