They only provided one set of keys, which was an issue when we wanted to go our separate ways while exploring Milan. They did provide a lockbox outside the apartment door, but a key was required to enter the building to get to the lockbox. They told me that I could call them anytime up to midnight and they would answer and could remotely unlock the building door for me. But the first time I tried that, no one answered at around 11 pm. So we learned not to rely on that solution. We just had to plan around whoever kept the keys.

Great location. Comfortable quiet accomodation.