I stayed at Mario's place for one night and it was perfect! Mario had thought of everything as the apartment was not lacking in any accommodations. It's located two minutes away from one of the main metro lines and was within walking distance of the Duomo. Mario himself was an excellent host! He met me outside the metro, helped me walk my bags to the apartment, and gave me a thorough tour of the place. When I accidentally locked myself out of the apartment at 10:30 at night, I messaged Mario in a panic, and he showed up 10 minutes later to let me back in. All in all, I highly recommend Mario's place!