Oliviero is a very kind person, he is always available to advice you if you have any doubts (about the room or just to know where to go to eat or to drink a good drink a beer or a glass of wine).
About the size of the room it is ok for 2 people, you have all essentials and it is very close to central station (5 min walking) to metro station (Repubblica yellow line) and to bus/tram stop that allows you to go everywhere easily. So I definitely advice is place if you are going to spend some days in Milan. When I will come back to Milan for sure I will come back to Olivero’s place.