This was a 1 minute walk from Il Duomo in the center of everything, but I heard no street noise.
Checkin was easy, the air conditioning worked very well, the foldout bed in the living room was comfortable, and there was plenty of room. It was exactly as advertised and an incredible bargain. So close to everything, including a metro stop about 30 seconds from the flat. I would absolutely stay here again and recommend to friends. The apartment was very well maintained, and it was even located in a doorman building. Plus our host had bottled water waiting for us when we arrived.