Not only is it a great apartment in the heart of Rome and 10-15min walk to all things relevant, but Alvise is an amazing host. From being there to check us in to helping us with our bags (including the heaviest one despite us requesting him to let it be) he's always available for assistance.
As for the apartment itself, it is beautiful and very centrally located. Its a 2min walk to the super market, 10min to the Roma Termini (Central Railway Station), Colosseum and the Trevi Fountain. The apartment is stocked with all your basic needs and everything is thoughtfully done. A couple of the washroom locks were a little sticky but nothing that was too problematic or a major issue. :)