I can really recommend Rossana's apartment. It really is a hidden gem in Rome. You find the apartment in a fancy residential area, which I love because you can feel like a local there. There are nice bars (perfect for your morning cappuccino) and restaurants and a market. The apartment was full of light (the windows in the bedroom are enormous!), felt spacious and has some nice pieces of art. It was quiet at night and the blinders worked perfectly. And of course we loved the big roof top terrace with a view, even in January we picked up some rays of sunlight there. Would definitely stay here again. And yes, it's a small walk to the main attractions of the city. We love walking, so perfect for us and otherwise you can take the bus.