Alessandro's has this cute little apartment literally 2 minutes away from Vatican City. It's perfect for 2 people, with 4 it was a little crowded but it's manageable. Alessandro is such a wonderful Host, one of the best I've ever came across Airbnb, he was very accommodating, despite us being almost 2 hours late because of our train, and he is extremely helpful. He also knows the best restaurants in the area. He will make your stay in Rome so much nicer and easier.