Marco was there to greet us and show us around. He left us wine and chocolates and encouraged us to text or call him if we had questions. When we left, at our request, he called a cab, and it arrived at exactly the time we'd asked for. So Marco was great.
As for the apartment, I didn't even realize ahead of time what a superb location it is in -- I love the ancient Roman monuments, and they were all right there, across a couple of streets or around the corner. The neighborhood is old and charming, and you can buy groceries, go out to eat, have gelato or a drink, browse in small shops ... Public transportation isn't far away. We had a great time.