First of all, this is a building of flats but there is reception (24/24) on the ground floor. The rooms are incredibly huge for Milan standards, the living is also quite big. By the quality of the furniture and the decoration, you could be in the suite of a five star hotel. Staff at the reception are friendly, no complaints. Very close to Duomo, no more than 10 minutes walk.
Unfortunately, these are the only good things I can say about this place. Kitchen and bathroom are clean but incredibly old, very old, and not well maintained (humidity on the ceiling). Not even the cheap B&b of 50eur per night I visited in my years of backpacker had bathrooms like this one. I only entered the kitchen to use the fridge, so I can't say much except that it was not in better condition than the bathroom.
It is like staying in two different places, the bedroom and living are very good but entering the bathroom was not the best moment of the day. Another problem was internet, they have some problems from time to time. So, if you need a reliable connection, it is better to go somewhere else.