We stayed at Marco's for 3 nights.
The house is centrally located just 5 minutes walk from a Metro station.
Marco is a great host, response promptly to your requests and he sent detail information of the house and its location including the history of the house prior to our arrival. He also gave ideas about where to have breakfast, lunch and dinner where only local knows, so it's not touristy places with bad quality. We tried 3 restaurants and they all fantastic. However, please always carry cash with you as some places don't accept credit card.
We had a great time staying at Marco's and highly recommended to everyone.