Marco is a great host. I stayed for a week in Rome and enjoyed it a lot. The apartment is quiet, clean and spacious. The metro stop is really few steps away from it. The red metro line, which goes directly to the Vatican, Spanish steps and Termini railway station. There are a couple of supermarkets nearby, I would recommend Simply offering a good choice and reasonable prices. Also there are some really nice bakeries and places to eat and drink nearby. Ask Marco, he knows the good ones.