We only stayed one night. Robert was nice and responded quickly to messages, although some instuctions (how to get into the building, where to keep the key when you leave) could have been shared a bit sooner, but it wasn't a problem.
The location is close (15 min walking) to Milano Centrale, but that is the only advantage.
It's more a hostel than an AirBnB and there are 5 rooms that share the space.
The walls are paper thin and you hear everything that is happening in the next room, which is why we almost didn't get any sleep.
Also be aware that the outdoor gate is locked but neither the front door nor the apartment door is locked (or even closed), but you can lock your room.